v0.9.0: no-MAC device tracking, IP-change dashboard, extended search

CHANGELOG.md

@@ -9,6 +9,63 @@ Dieses Projekt verwendet [Semantic Versioning](https://semver.org/lang/de/).
 
 ---
 
+## [0.9.0] - 2026-07-02
+
+### Added
+- Geräte-Tracking ohne MAC-Adresse: nmap-Hosts aus Remote-Subnetzen (kein ARP möglich) werden jetzt als `network_devices`-Einträge erfasst (Tracking per Hostname, Fallback per IP)
+- `mac_address` in `network_devices` ist jetzt nullable (mehrere NULL-Werte durch MySQL erlaubt)
+- Dashboard: Separater Warnblock „⚠️ IP-Adressen-Wechsel erkannt" mit Anzeige alter IP → neuer IP, Gerätename, MAC, Quittier-Button inkl. Notizfeld
+- Alle anderen Ereignisse auf dem Dashboard ebenfalls mit inline Notiz quittierbar
+- Geräte-Detailseite: IP-Verlauf zeigt Hinweis wenn ein Gerät mehrere verschiedene IPs hatte, alle bekannten IPs als Tags, aktuelle IP hervorgehoben
+- Globale Suche: `netbios_name` wird jetzt mitdurchsucht
+
+### Setup (einmalig)
+```
+php artisan migrate
+```
+
+---
+
+## [0.8.0] - 2026-07-02
+
+### Added
+- IP-Bemerkungen: Pro IP-Adresse je Segment eine Bemerkung hinterlegen (inline editierbar in der Scan-Detailansicht)
+- Neue Tabelle `network_ip_notes` (Segment + IP als Unique-Key)
+- Subnetz-Erkennung: Schaltfläche „🔍 Erkennen" in Segment anlegen/bearbeiten – ermittelt /24-Subnetze aus vorhandenen IP-Daten per API (`/network/detect-subnets`)
+- Export Segment als Excel (`.xlsx`) via PhpSpreadsheet – enthält alle Hosts des letzten Scans inkl. Bemerkungen
+- Export Segment als PDF via DomPDF – Querformat-Tabelle mit Hosts, Status, MAC, Hostname, Hersteller, Ping und Bemerkungen
+- Export-Buttons (📊 Excel / 📄 PDF) auf Segment-Detailseite und Scan-Detailseite
+
+### Setup (einmalig ausführen)
+```
+composer require phpoffice/phpspreadsheet barryvdh/laravel-dompdf
+php artisan migrate
+```
+
+---
+
+## [0.7.0] - 2026-07-02
+
+### Added
+- Automatischer Netzwerkscan via `nmap` pro Segment (Artisan Command `network:scan`)
+- Scan-Zyklus pro Segment einstellbar: 5 / 15 / 30 / 60 / 360 / 720 / 1440 Minuten
+- „Jetzt scannen"-Button direkt auf der Segment-Detailseite
+- nmap-Parameter pro Segment konfigurierbar (z.B. `-sn`, `-sn -p 22,80,443`)
+- Laravel Scheduler führt `network:scan` jede Minute aus und prüft fällige Segmente
+- Auto-Refresh auf Segment-Detailseite nach manuellem Scan (prüft alle 10s)
+- Chronologischer IP-Verlauf (`/network/history`) über alle Scans und Segmente
+- Filter im IP-Verlauf: IP, MAC, Hostname, Segment, Status, Datumsbereich
+- IP-Verlauf Auto-Refresh alle 60 Sekunden (ohne aktiven Filter)
+- Navigation: neuer Menüpunkt „IP-Verlauf"
+- `last_scanned_at` und `scan_interval_minutes` in Segment-Stammdaten
+
+### Setup (Cron für Scheduler)
+```
+* * * * * cd /home/arudolph/Projekte/PHP/Network-MGMT && php artisan schedule:run >> /dev/null 2>&1
+```
+
+---
+
 ## [0.6.0] - 2026-07-01
 
 ### Added
@@ -95,7 +152,10 @@ Dieses Projekt verwendet [Semantic Versioning](https://semver.org/lang/de/).
 - Grundlegende PHP-Projektstruktur (public/, src/, config/)
 - composer.json, .gitignore, README.md
 
-[Unreleased]: http://localhost:3000/admin/Network-MGMT/compare/v0.6.0...HEAD
+[Unreleased]: http://localhost:3000/admin/Network-MGMT/compare/v0.9.0...HEAD
+[0.9.0]: http://localhost:3000/admin/Network-MGMT/compare/v0.8.0...v0.9.0
+[0.8.0]: http://localhost:3000/admin/Network-MGMT/compare/v0.7.0...v0.8.0
+[0.7.0]: http://localhost:3000/admin/Network-MGMT/compare/v0.6.0...v0.7.0
 [0.6.0]: http://localhost:3000/admin/Network-MGMT/compare/v0.5.0...v0.6.0
 [0.5.0]: http://localhost:3000/admin/Network-MGMT/compare/v0.4.0...v0.5.0
 [0.4.0]: http://localhost:3000/admin/Network-MGMT/compare/v0.3.0...v0.4.0

app/Console/Commands/NetworkScanCommand.php

@@ -0,0 +1,348 @@
+<?php
+
+namespace App\Console\Commands;
+
+use App\Models\NetworkDevice;
+use App\Models\NetworkDeviceEvent;
+use App\Models\NetworkHost;
+use App\Models\NetworkScan;
+use App\Models\NetworkSegment;
+use Illuminate\Console\Command;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Log;
+
+class NetworkScanCommand extends Command
+{
+    protected $signature = 'network:scan
+                            {segment? : ID des zu scannenden Segments (leer = alle fälligen)}
+                            {--force : Scan erzwingen, auch wenn Intervall noch nicht abgelaufen}';
+
+    protected $description = 'Führt einen nmap-Scan für ein oder alle aktiven Netzwerk-Segmente durch';
+
+    public function handle(): int
+    {
+        $segmentId = $this->argument('segment');
+        $force     = $this->option('force');
+
+        if ($segmentId) {
+            $segments = NetworkSegment::where('id', $segmentId)->where('active', true)->get();
+            if ($segments->isEmpty()) {
+                $this->error("Segment #{$segmentId} nicht gefunden oder inaktiv.");
+                return Command::FAILURE;
+            }
+        } else {
+            $segments = NetworkSegment::where('active', true)->get()
+                ->filter(fn($s) => $force || $s->isScanDue());
+        }
+
+        if ($segments->isEmpty()) {
+            $this->info('Kein Segment fällig. Mit --force erzwingen.');
+            return Command::SUCCESS;
+        }
+
+        foreach ($segments as $segment) {
+            $this->info("Scanne Segment: {$segment->name} ({$segment->subnet}) ...");
+            $this->scanSegment($segment);
+        }
+
+        return Command::SUCCESS;
+    }
+
+    private function scanSegment(NetworkSegment $segment): void
+    {
+        // Subnetz aus "192.168.86.0/24" extrahieren, oder direkt als Range nutzen
+        $target  = $segment->subnet;
+        $options = $segment->nmap_options ?: '-sn';
+
+        // nmap im XML-Modus ausführen
+        $cmd     = "nmap {$options} -oX - " . escapeshellarg($target) . " 2>/dev/null";
+        $xmlOutput = shell_exec($cmd);
+
+        if (empty($xmlOutput)) {
+            $this->warn("  nmap lieferte keine Ausgabe. Ist nmap installiert? (sudo pacman -S nmap)");
+            Log::warning("NetworkScan: nmap gab keine Ausgabe für Segment {$segment->id}");
+            return;
+        }
+
+        $hosts = $this->parseNmapXml($xmlOutput);
+        $this->info("  {$hosts['online']} online von " . count($hosts['rows']) . " gefunden.");
+
+        DB::transaction(function () use ($segment, $hosts, $target) {
+            $scan = NetworkScan::create([
+                'segment_id'      => $segment->id,
+                'subnet'          => $target,
+                'source'          => 'auto',
+                'scanner'         => 'nmap',
+                'total_hosts'     => count($hosts['rows']),
+                'online_hosts'    => $hosts['online'],
+                'new_devices'     => 0,
+                'changed_devices' => 0,
+                'created_by'      => null,
+            ]);
+
+            $newDevices     = 0;
+            $changedDevices = 0;
+
+            foreach ($hosts['rows'] as $row) {
+                $hostRecord = NetworkHost::create([
+                    'scan_id'     => $scan->id,
+                    'ip_address'  => $row['ip'],
+                    'mac_address' => $row['mac'] ?: null,
+                    'hostname'    => $row['hostname'] ?: null,
+                    'mac_vendor'  => $row['vendor'] ?: null,
+                    'status'      => $row['status'],
+                    'ping_ms'     => null,
+                    'ttl'         => null,
+                ]);
+
+                if (!empty($row['mac'])) {
+                    [$newDevices, $changedDevices] = $this->processDevice(
+                        $hostRecord, $row, $scan->id, $newDevices, $changedDevices
+                    );
+                } elseif ($row['status'] === 'online') {
+                    // Kein MAC (Remote-Subnet / kein Root-ARP) → Tracking per Hostname/IP
+                    [$newDevices, $changedDevices] = $this->processDeviceWithoutMac(
+                        $hostRecord, $row, $scan->id, $newDevices, $changedDevices
+                    );
+                }
+            }
+
+            $scan->update([
+                'new_devices'     => $newDevices,
+                'changed_devices' => $changedDevices,
+            ]);
+        });
+
+        $segment->update(['last_scanned_at' => now()]);
+        $this->info("  ✓ Scan gespeichert.");
+    }
+
+    private function parseNmapXml(string $xml): array
+    {
+        $rows   = [];
+        $online = 0;
+
+        try {
+            $doc = new \SimpleXMLElement($xml);
+        } catch (\Exception $e) {
+            Log::error('NetworkScan: nmap XML parse error: ' . $e->getMessage());
+            return ['rows' => [], 'online' => 0];
+        }
+
+        foreach ($doc->host as $host) {
+            $status = (string) $host->status['state']; // up | down
+            $ip     = '';
+            $mac    = '';
+            $vendor = '';
+
+            foreach ($host->address as $addr) {
+                $type = (string) $addr['addrtype'];
+                if ($type === 'ipv4') {
+                    $ip = (string) $addr['addr'];
+                } elseif ($type === 'mac') {
+                    $mac    = $this->normalizeMac((string) $addr['addr']);
+                    $vendor = (string) $addr['vendor'];
+                }
+            }
+
+            $hostname = '';
+            foreach ($host->hostnames->hostname ?? [] as $hn) {
+                if ((string) $hn['type'] === 'PTR') {
+                    $hostname = (string) $hn['name'];
+                    break;
+                }
+            }
+
+            if ($status === 'up') {
+                $online++;
+            }
+
+            if ($ip) {
+                $rows[] = [
+                    'ip'       => $ip,
+                    'mac'      => $mac,
+                    'vendor'   => $vendor,
+                    'hostname' => $hostname,
+                    'status'   => $status === 'up' ? 'online' : 'offline',
+                ];
+            }
+        }
+
+        return ['rows' => $rows, 'online' => $online];
+    }
+
+    private function processDevice(
+        NetworkHost $hostRecord,
+        array $row,
+        int $scanId,
+        int $newDevices,
+        int $changedDevices
+    ): array {
+        $device = NetworkDevice::firstOrNew(['mac_address' => $row['mac']]);
+        $isNew  = !$device->exists;
+
+        if ($isNew) {
+            $device->fill([
+                'current_ip'    => $row['ip'],
+                'hostname'      => $row['hostname'] ?: null,
+                'mac_vendor'    => $row['vendor'] ?: null,
+                'status'        => $row['status'],
+                'first_seen_at' => now(),
+                'last_seen_at'  => now(),
+            ])->save();
+
+            NetworkDeviceEvent::create([
+                'device_id'   => $device->id,
+                'scan_id'     => $scanId,
+                'event_type'  => 'new_device',
+                'new_value'   => $row['ip'],
+                'description' => "Erstes Erscheinen: {$row['ip']}" . ($row['vendor'] ? " ({$row['vendor']})" : ''),
+            ]);
+            $newDevices++;
+        } else {
+            $events = [];
+
+            if ($device->current_ip !== $row['ip']) {
+                $events[] = [
+                    'event_type'  => 'ip_changed',
+                    'old_value'   => $device->current_ip,
+                    'new_value'   => $row['ip'],
+                    'description' => "IP geändert: {$device->current_ip} → {$row['ip']}",
+                ];
+                $changedDevices++;
+            }
+
+            if ($device->status !== $row['status']) {
+                $events[] = [
+                    'event_type'  => $row['status'] === 'online' ? 'came_online' : 'went_offline',
+                    'old_value'   => $device->status,
+                    'new_value'   => $row['status'],
+                    'description' => $row['status'] === 'online'
+                        ? "Gerät wieder online ({$row['ip']})"
+                        : "Gerät offline ({$device->current_ip})",
+                ];
+            }
+
+            $device->update([
+                'current_ip'   => $row['ip'],
+                'hostname'     => $row['hostname'] ?: $device->hostname,
+                'status'       => $row['status'],
+                'last_seen_at' => now(),
+            ]);
+
+            foreach ($events as $event) {
+                NetworkDeviceEvent::create(array_merge($event, [
+                    'device_id' => $device->id,
+                    'scan_id'   => $scanId,
+                ]));
+            }
+        }
+
+        $hostRecord->update(['device_id' => $device->id]);
+
+        return [$newDevices, $changedDevices];
+    }
+
+    /**
+     * Geräte ohne MAC-Adresse tracken (z.B. Remote-Subnet wo kein ARP möglich ist).
+     * Primärschlüssel: Hostname (stabil per DNS). Fallback: IP-Adresse.
+     */
+    private function processDeviceWithoutMac(
+        NetworkHost $hostRecord,
+        array $row,
+        int $scanId,
+        int $newDevices,
+        int $changedDevices
+    ): array {
+        // Vorhandenes Gerät suchen: erst per Hostname, dann per IP
+        $device = null;
+
+        if (!empty($row['hostname'])) {
+            $device = NetworkDevice::whereNull('mac_address')
+                ->where('hostname', $row['hostname'])
+                ->first();
+        }
+
+        if (!$device) {
+            $device = NetworkDevice::whereNull('mac_address')
+                ->where('current_ip', $row['ip'])
+                ->first();
+        }
+
+        $isNew = !$device;
+
+        if ($isNew) {
+            $device = new NetworkDevice();
+            $device->fill([
+                'mac_address'   => null,
+                'current_ip'    => $row['ip'],
+                'hostname'      => $row['hostname'] ?: null,
+                'mac_vendor'    => null,
+                'status'        => $row['status'],
+                'first_seen_at' => now(),
+                'last_seen_at'  => now(),
+            ])->save();
+
+            NetworkDeviceEvent::create([
+                'device_id'   => $device->id,
+                'scan_id'     => $scanId,
+                'event_type'  => 'new_device',
+                'new_value'   => $row['ip'],
+                'description' => 'Erstes Erscheinen (kein MAC): ' . $row['ip']
+                    . ($row['hostname'] ? " ({$row['hostname']})" : ''),
+            ]);
+            $newDevices++;
+        } else {
+            $events = [];
+
+            // IP-Wechsel: Hostname gleich, aber andere IP
+            if ($device->current_ip !== $row['ip']) {
+                $events[] = [
+                    'event_type'  => 'ip_changed',
+                    'old_value'   => $device->current_ip,
+                    'new_value'   => $row['ip'],
+                    'description' => "IP geändert: {$device->current_ip} → {$row['ip']}",
+                ];
+                $changedDevices++;
+            }
+
+            if ($device->status !== $row['status']) {
+                $events[] = [
+                    'event_type'  => $row['status'] === 'online' ? 'came_online' : 'went_offline',
+                    'old_value'   => $device->status,
+                    'new_value'   => $row['status'],
+                    'description' => $row['status'] === 'online'
+                        ? "Gerät wieder online ({$row['ip']})"
+                        : "Gerät offline ({$device->current_ip})",
+                ];
+            }
+
+            $device->update([
+                'current_ip'   => $row['ip'],
+                'hostname'     => $row['hostname'] ?: $device->hostname,
+                'status'       => $row['status'],
+                'last_seen_at' => now(),
+            ]);
+
+            foreach ($events as $event) {
+                NetworkDeviceEvent::create(array_merge($event, [
+                    'device_id' => $device->id,
+                    'scan_id'   => $scanId,
+                ]));
+            }
+        }
+
+        $hostRecord->update(['device_id' => $device->id]);
+
+        return [$newDevices, $changedDevices];
+    }
+
+    private function normalizeMac(string $mac): string
+    {
+        $clean = preg_replace('/[^a-fA-F0-9]/', '', $mac);
+        if (strlen($clean) !== 12) {
+            return '';
+        }
+        return strtoupper(implode(':', str_split($clean, 2)));
+    }
+}

app/Http/Controllers/NetworkController.php

@@ -4,26 +4,53 @@ namespace App\Http\Controllers;
 
 use App\Models\NetworkDevice;
 use App\Models\NetworkDeviceEvent;
+use App\Models\NetworkHost;
 use App\Models\NetworkScan;
 use App\Models\NetworkSegment;
 use App\Services\NetworkScanImporter;
+use Illuminate\Http\JsonResponse;
 use Illuminate\Http\RedirectResponse;
 use Illuminate\Http\Request;
+use Illuminate\Support\Facades\DB;
 use Illuminate\Support\Facades\Storage;
 use Illuminate\View\View;
 
 class NetworkController extends Controller
 {
+    // --- Subnetz-Erkennung aus vorhandenen IP-Daten ---
+    public function detectSubnets(): JsonResponse
+    {
+        $subnets = DB::table('network_hosts')
+            ->whereNotNull('ip_address')
+            ->select(DB::raw("CONCAT(SUBSTRING_INDEX(ip_address, '.', 3), '.0/24') as subnet"))
+            ->distinct()
+            ->orderBy('subnet')
+            ->pluck('subnet')
+            ->toArray();
+
+        return response()->json($subnets);
+    }
+
     // --- Dashboard ---
     public function dashboard(): View
     {
         $segments = NetworkSegment::withCount('scans')->orderBy('name')->get();
         $totalDevices  = NetworkDevice::count();
         $onlineDevices = NetworkDevice::where('status', 'online')->count();
+
+        // IP-Wechsel separat → prominenter Block oben
+        $ipChangeEvents = NetworkDeviceEvent::with('device')
+            ->where('documented', false)
+            ->where('event_type', 'ip_changed')
+            ->latest()
+            ->get();
+
+        // Alle anderen undokumentierten Ereignisse
         $recentEvents = NetworkDeviceEvent::with('device')
             ->where('documented', false)
+            ->where('event_type', '!=', 'ip_changed')
             ->latest()
-            ->take(10)
+            ->take(15)
             ->get();
 
         // Letzten Scan pro Segment
@@ -33,31 +60,113 @@ class NetworkController extends Controller
             ->groupBy('segment_id');
 
         return view('network.dashboard', compact(
-            'segments', 'totalDevices', 'onlineDevices', 'recentEvents', 'latestScans'
+            'segments', 'totalDevices', 'onlineDevices',
+            'recentEvents', 'ipChangeEvents', 'latestScans'
         ));
     }
 
+    // --- Chronologischer IP-Verlauf ---
+    public function history(Request $request): View
+    {
+        $query = \App\Models\NetworkHost::query()
+            ->join('network_scans', 'network_scans.id', '=', 'network_hosts.scan_id')
+            ->leftJoin('network_segments', 'network_segments.id', '=', 'network_scans.segment_id')
+            ->leftJoin('network_devices', 'network_devices.id', '=', 'network_hosts.device_id')
+            ->select([
+                'network_hosts.*',
+                'network_scans.created_at as scan_time',
+                'network_scans.segment_id',
+                'network_scans.scanner',
+                'network_segments.name as segment_name',
+                'network_devices.label as device_label',
+            ]);
+
+        if ($request->filled('ip')) {
+            $query->where('network_hosts.ip_address', 'like', '%' . $request->ip . '%');
+        }
+        if ($request->filled('mac')) {
+            $query->where('network_hosts.mac_address', 'like', '%' . $request->mac . '%');
+        }
+        if ($request->filled('hostname')) {
+            $query->where(function ($q) use ($request) {
+                $q->where('network_hosts.hostname', 'like', '%' . $request->hostname . '%')
+                  ->orWhere('network_devices.label', 'like', '%' . $request->hostname . '%');
+            });
+        }
+        if ($request->filled('segment')) {
+            $query->where('network_scans.segment_id', $request->segment);
+        }
+        if ($request->filled('status')) {
+            $query->where('network_hosts.status', $request->status);
+        }
+        if ($request->filled('from')) {
+            $query->where('network_scans.created_at', '>=', $request->from . ' 00:00:00');
+        }
+        if ($request->filled('to')) {
+            $query->where('network_scans.created_at', '<=', $request->to . ' 23:59:59');
+        }
+
+        $entries  = $query->orderByDesc('network_scans.created_at')
+                          ->orderByRaw('INET_ATON(network_hosts.ip_address)')
+                          ->paginate(100)
+                          ->withQueryString();
+
+        $segments = \App\Models\NetworkSegment::orderBy('name')->get();
+
+        return view('network.history', compact('entries', 'segments'));
+    }
+
     // --- Globale Suche ---
     public function search(Request $request): View
     {
         $q       = trim($request->get('q', ''));
         $devices = collect();
+        $hostResults = collect();
 
         if (strlen($q) >= 2) {
+            // Suche in network_devices (MAC-basiert / bereits getracked)
             $devices = NetworkDevice::with('events')
                 ->where(function ($query) use ($q) {
                     $query->where('current_ip',    'like', "%{$q}%")
                           ->orWhere('mac_address', 'like', "%{$q}%")
                           ->orWhere('hostname',    'like', "%{$q}%")
+                          ->orWhere('netbios_name','like', "%{$q}%")
                           ->orWhere('label',       'like', "%{$q}%")
                           ->orWhere('mac_vendor',  'like', "%{$q}%");
                 })
                 ->orderBy('current_ip')
                 ->paginate(50)
                 ->withQueryString();
+
+            // Zusätzlich: direkte Suche in network_hosts (auch ohne Device-Eintrag)
+            // Zeigt IPs/Hosts die in Scans gefunden wurden, aber noch kein Device-Record haben
+            $hostResults = NetworkHost::query()
+                ->join('network_scans', 'network_scans.id', '=', 'network_hosts.scan_id')
+                ->leftJoin('network_segments', 'network_segments.id', '=', 'network_scans.segment_id')
+                ->whereNull('network_hosts.device_id')
+                ->where(function ($query) use ($q) {
+                    $query->where('network_hosts.ip_address', 'like', "%{$q}%")
+                          ->orWhere('network_hosts.mac_address', 'like', "%{$q}%")
+                          ->orWhere('network_hosts.hostname',   'like', "%{$q}%");
+                })
+                ->select([
+                    'network_hosts.ip_address',
+                    'network_hosts.mac_address',
+                    'network_hosts.hostname',
+                    'network_hosts.mac_vendor',
+                    'network_hosts.status',
+                    'network_hosts.ping_ms',
+                    'network_scans.created_at as scan_time',
+                    'network_segments.name as segment_name',
+                    DB::raw('network_scans.id as scan_id'),
+                ])
+                ->orderByDesc('network_scans.created_at')
+                ->limit(50)
+                ->get()
+                ->unique('ip_address'); // Jede IP nur einmal (neuester Fund)
         }
 
-        return view('network.search', compact('q', 'devices'));
+        return view('network.search', compact('q', 'devices', 'hostResults'));
     }
 
     // --- Alte index-Route umleiten ---
@@ -203,6 +312,12 @@ class NetworkController extends Controller
             ->orderByRaw("INET_ATON(ip_address)")
             ->get();
 
-        return view('network.scan', compact('scan', 'hosts'));
+        $notes = collect();
+        if ($scan->segment_id) {
+            $notes = \App\Models\NetworkIpNote::where('segment_id', $scan->segment_id)
+                ->pluck('note', 'ip_address');
+        }
+
+        return view('network.scan', compact('scan', 'hosts', 'notes'));
     }
 }

app/Http/Controllers/NetworkSegmentController.php

@@ -2,9 +2,13 @@
 
 namespace App\Http\Controllers;
 
+use App\Models\NetworkIpNote;
 use App\Models\NetworkSegment;
+use Illuminate\Http\JsonResponse;
 use Illuminate\Http\RedirectResponse;
 use Illuminate\Http\Request;
+use Illuminate\Support\Facades\Artisan;
+use Illuminate\Support\Facades\DB;
 use Illuminate\View\View;
 
 class NetworkSegmentController extends Controller
@@ -80,4 +84,96 @@ class NetworkSegmentController extends Controller
         return redirect()->route('network.segments.index')
             ->with('success', "Segment \"{$name}\" gelöscht.");
     }
+
+    public function triggerScan(NetworkSegment $segment): RedirectResponse
+    {
+        if (!$segment->active) {
+            return back()->with('error', 'Segment ist inaktiv.');
+        }
+
+        // Scan im Hintergrund starten (non-blocking)
+        $projectPath = base_path();
+        $phpBinary   = PHP_BINARY;
+        $cmd = "cd {$projectPath} && {$phpBinary} artisan network:scan {$segment->id} --force > /dev/null 2>&1 &";
+        exec($cmd);
+
+        return redirect()->route('network.segments.show', $segment)
+            ->with('success', "Scan für \"{$segment->name}\" wurde gestartet. Ergebnisse erscheinen in Kürze.");
+    }
+
+    // --- IP-Notiz speichern (Upsert per Segment + IP) ---
+    public function saveIpNote(Request $request, NetworkSegment $segment): JsonResponse
+    {
+        $request->validate([
+            'ip_address' => ['required', 'ip'],
+            'note'       => ['nullable', 'string', 'max:500'],
+        ]);
+
+        NetworkIpNote::updateOrCreate(
+            ['segment_id' => $segment->id, 'ip_address' => $request->ip_address],
+            [
+                'note'       => $request->note,
+                'updated_by' => auth()->id(),
+                'created_by' => auth()->id(),
+            ]
+        );
+
+        return response()->json(['ok' => true]);
+    }
+
+    // --- Export: Excel (OpenSpout – kein ext-gd, PHP 8.5 kompatibel) ---
+    public function exportXlsx(NetworkSegment $segment)
+    {
+        $hosts = $this->getLatestScanHosts($segment);
+        $notes = NetworkIpNote::where('segment_id', $segment->id)
+            ->pluck('note', 'ip_address');
+
+        $filename = 'Segment_' . preg_replace('/[^a-zA-Z0-9_-]/', '_', $segment->name)
+            . '_' . now()->format('Ymd_Hi') . '.xlsx';
+        $tempFile = tempnam(sys_get_temp_dir(), 'net_export_') . '.xlsx';
+
+        $writer = new \OpenSpout\Writer\XLSX\Writer();
+        $writer->openToFile($tempFile);
+
+        $writer->addRow(\OpenSpout\Common\Entity\Row::fromValues([
+            'IP-Adresse', 'Status', 'Hostname', 'MAC-Adresse', 'Hersteller', 'Ping (ms)', 'Bemerkung',
+        ]));
+
+        foreach ($hosts as $host) {
+            $writer->addRow(\OpenSpout\Common\Entity\Row::fromValues([
+                $host->ip_address,
+                $host->status,
+                $host->hostname ?? '',
+                $host->mac_address ?? '',
+                $host->mac_vendor ?? '',
+                $host->ping_ms !== null ? (string) $host->ping_ms : '',
+                $notes[$host->ip_address] ?? '',
+            ]));
+        }
+
+        $writer->close();
+
+        return response()->download($tempFile, $filename, [
+            'Content-Type' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+        ])->deleteFileAfterSend(true);
+    }
+
+    // --- Export: PDF (Browser-Print-View – kein PHP-PDF-Package nötig) ---
+    public function exportPdf(NetworkSegment $segment)
+    {
+        $hosts = $this->getLatestScanHosts($segment);
+        $notes = NetworkIpNote::where('segment_id', $segment->id)
+            ->pluck('note', 'ip_address');
+
+        return view('network.segments.export-pdf', compact('segment', 'hosts', 'notes'));
+    }
+
+    private function getLatestScanHosts(NetworkSegment $segment)
+    {
+        $latestScan = $segment->scans()->latest()->first();
+        if (!$latestScan) {
+            return collect();
+        }
+        return $latestScan->hosts()->orderByRaw('INET_ATON(ip_address)')->get();
+    }
 }

app/Models/NetworkIpNote.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class NetworkIpNote extends Model
+{
+    protected $fillable = [
+        'segment_id',
+        'ip_address',
+        'note',
+        'created_by',
+        'updated_by',
+    ];
+
+    public function segment(): BelongsTo
+    {
+        return $this->belongsTo(NetworkSegment::class);
+    }
+}

app/Models/NetworkSegment.php

@@ -10,14 +10,44 @@ use Illuminate\Database\Eloquent\Relations\HasManyThrough;
 class NetworkSegment extends Model
 {
     protected $fillable = [
-        'name', 'subnet', 'vlan_id', 'active', 'description', 'created_by',
+        'name', 'subnet', 'vlan_id', 'active', 'description',
+        'scan_interval_minutes', 'last_scanned_at', 'nmap_options', 'created_by',
     ];
 
     protected $casts = [
         'active'                 => 'boolean',
         'vlan_id'                => 'integer',
+        'scan_interval_minutes'  => 'integer',
+        'last_scanned_at'        => 'datetime',
     ];
 
+    /** Ist ein automatischer Scan fällig? */
+    public function isScanDue(): bool
+    {
+        if (!$this->active || !$this->scan_interval_minutes) {
+            return false;
+        }
+        if (!$this->last_scanned_at) {
+            return true;
+        }
+        return $this->last_scanned_at->addMinutes($this->scan_interval_minutes)->isPast();
+    }
+
+    /** Lesbare Intervall-Beschreibung */
+    public function getScanIntervalLabelAttribute(): string
+    {
+        return match($this->scan_interval_minutes) {
+            5    => 'alle 5 Minuten',
+            15   => 'alle 15 Minuten',
+            30   => 'alle 30 Minuten',
+            60   => 'stündlich',
+            360  => 'alle 6 Stunden',
+            720  => 'alle 12 Stunden',
+            1440 => 'täglich',
+            default => 'manuell',
+        };
+    }
+
     public function createdBy(): BelongsTo
     {
         return $this->belongsTo(User::class, 'created_by');

composer.json

@@ -9,6 +9,7 @@
         "php": "^8.3",
         "laravel/framework": "^13.8",
         "laravel/tinker": "^3.0",
+        "openspout/openspout": "^5.7",
         "spatie/laravel-permission": "^8.0"
     },
     "require-dev": {

composer.lock

@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "8e2e89c33485082dd08a993fad67945d",
+    "content-hash": "a17f728f96acdb49759b28983a8e062a",
     "packages": [
         {
             "name": "brick/math",
@@ -2540,6 +2540,99 @@
             ],
             "time": "2026-02-16T23:10:27+00:00"
         },
+        {
+            "name": "openspout/openspout",
+            "version": "v5.7.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/openspout/openspout.git",
+                "reference": "f383ae8ab4c735b6a6a0cef396e9799900584f3e"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/openspout/openspout/zipball/f383ae8ab4c735b6a6a0cef396e9799900584f3e",
+                "reference": "f383ae8ab4c735b6a6a0cef396e9799900584f3e",
+                "shasum": ""
+            },
+            "require": {
+                "ext-dom": "*",
+                "ext-filter": "*",
+                "ext-libxml": "*",
+                "ext-xmlreader": "*",
+                "ext-zip": "*",
+                "php": "~8.4.0 || ~8.5.0"
+            },
+            "require-dev": {
+                "ext-fileinfo": "*",
+                "ext-zlib": "*",
+                "friendsofphp/php-cs-fixer": "^3.95.2",
+                "infection/infection": "^0.33.2",
+                "phpbench/phpbench": "^1.6.1",
+                "phpstan/phpstan": "^2.2.1",
+                "phpstan/phpstan-phpunit": "^2.0.16",
+                "phpstan/phpstan-strict-rules": "^2.0.11",
+                "phpunit/phpunit": "^13.1.13"
+            },
+            "suggest": {
+                "ext-iconv": "To handle non UTF-8 CSV files (if \"php-mbstring\" is not already installed or is too limited)",
+                "ext-mbstring": "To handle non UTF-8 CSV files (if \"iconv\" is not already installed)"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "3.3.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "OpenSpout\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Adrien Loison",
+                    "email": "adrien@box.com"
+                }
+            ],
+            "description": "PHP Library to read and write spreadsheet files (CSV, XLSX and ODS), in a fast and scalable way",
+            "homepage": "https://github.com/openspout/openspout",
+            "keywords": [
+                "OOXML",
+                "csv",
+                "excel",
+                "memory",
+                "odf",
+                "ods",
+                "office",
+                "open",
+                "php",
+                "read",
+                "scale",
+                "spreadsheet",
+                "stream",
+                "write",
+                "xlsx"
+            ],
+            "support": {
+                "issues": "https://github.com/openspout/openspout/issues",
+                "source": "https://github.com/openspout/openspout/tree/v5.7.2"
+            },
+            "funding": [
+                {
+                    "url": "https://paypal.me/filippotessarotto",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/Slamdunk",
+                    "type": "github"
+                }
+            ],
+            "time": "2026-05-29T11:43:33+00:00"
+        },
         {
             "name": "phpoption/phpoption",
             "version": "1.9.5",

database/migrations/2026_07_01_100003_add_scan_config_to_network_segments.php

@@ -0,0 +1,27 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::table('network_segments', function (Blueprint $table) {
+            // Scan-Zyklus in Minuten: null = manuell, 5/15/30/60/360/1440
+            $table->unsignedInteger('scan_interval_minutes')->nullable()->after('active');
+            // Zeitpunkt des letzten automatischen Scans
+            $table->timestamp('last_scanned_at')->nullable()->after('scan_interval_minutes');
+            // Optionale nmap-Parameter, z.B. "-sn" oder "-sn -p 22,80,443"
+            $table->string('nmap_options')->default('-sn')->after('last_scanned_at');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('network_segments', function (Blueprint $table) {
+            $table->dropColumn(['scan_interval_minutes', 'last_scanned_at', 'nmap_options']);
+        });
+    }
+};

database/migrations/2026_07_02_100001_create_network_ip_notes_table.php

@@ -0,0 +1,29 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::create('network_ip_notes', function (Blueprint $table) {
+            $table->id();
+            $table->unsignedBigInteger('segment_id')->nullable()->index();
+            $table->string('ip_address', 45)->index();
+            $table->text('note')->nullable();
+            $table->unsignedBigInteger('created_by')->nullable();
+            $table->unsignedBigInteger('updated_by')->nullable();
+            $table->timestamps();
+
+            $table->unique(['segment_id', 'ip_address']);
+            $table->foreign('segment_id')->references('id')->on('network_segments')->onDelete('cascade');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('network_ip_notes');
+    }
+};

database/migrations/2026_07_02_200001_make_mac_address_nullable_in_network_devices.php

@@ -0,0 +1,23 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        // MAC-Adresse nullable machen, damit nmap-Hosts ohne MAC als Gerät erfasst werden können.
+        // In MySQL/MariaDB erlaubt UNIQUE NULL mehrere NULL-Werte gleichzeitig.
+        DB::statement('ALTER TABLE network_devices MODIFY mac_address VARCHAR(255) NULL');
+    }
+
+    public function down(): void
+    {
+        // NULL-Einträge entfernen, bevor wir NOT NULL setzen
+        DB::statement("DELETE FROM network_devices WHERE mac_address IS NULL");
+        DB::statement('ALTER TABLE network_devices MODIFY mac_address VARCHAR(255) NOT NULL');
+    }
+};

resources/views/layouts/navigation.blade.php

@@ -63,6 +63,9 @@
                             <x-dropdown-link :href="route('network.search')">
                                 🔍 Suche
                             </x-dropdown-link>
+                            <x-dropdown-link :href="route('network.history')">
+                                📅 IP-Verlauf
+                            </x-dropdown-link>
                             <x-dropdown-link :href="route('network.import')">
                                 ⬆️ Scan importieren
                             </x-dropdown-link>

resources/views/network/dashboard.blade.php

@@ -34,10 +34,83 @@
                 </div>
                 <div class="bg-white dark:bg-gray-800 rounded-lg shadow-sm p-4">
                     <p class="text-xs text-gray-500 dark:text-gray-400 uppercase tracking-wider">Offene Ereignisse</p>
-                    <p class="mt-1 text-2xl font-bold text-yellow-600 dark:text-yellow-400">{{ $recentEvents->count() }}</p>
+                    <p class="mt-1 text-2xl font-bold text-yellow-600 dark:text-yellow-400">
+                        {{ $recentEvents->count() + $ipChangeEvents->count() }}
+                    </p>
                 </div>
             </div>
 
+            {{-- ⚠️ IP-Wechsel – prominenter Warnblock --}}
+            @if($ipChangeEvents->count() > 0)
+            <div class="bg-amber-50 dark:bg-amber-900/20 border border-amber-300 dark:border-amber-700 rounded-lg overflow-hidden">
+                <div class="px-5 py-3 border-b border-amber-200 dark:border-amber-700 flex items-center justify-between">
+                    <h3 class="font-semibold text-amber-800 dark:text-amber-300 flex items-center gap-2">
+                        ⚠️ IP-Adressen-Wechsel erkannt
+                        <span class="bg-amber-200 dark:bg-amber-800 text-amber-900 dark:text-amber-200 text-xs px-2 py-0.5 rounded-full font-bold">
+                            {{ $ipChangeEvents->count() }}
+                        </span>
+                    </h3>
+                    <span class="text-xs text-amber-600 dark:text-amber-400">Bitte prüfen und quittieren</span>
+                </div>
+                <div class="divide-y divide-amber-100 dark:divide-amber-800">
+                    @foreach($ipChangeEvents as $event)
+                    <div class="px-5 py-4">
+                        <div class="flex flex-wrap items-center justify-between gap-3">
+                            {{-- Gerät und IP-Wechsel --}}
+                            <div class="flex-1 min-w-0">
+                                <div class="flex items-center flex-wrap gap-2 mb-1">
+                                    <a href="{{ route('network.device', $event->device) }}"
+                                       class="font-semibold text-gray-900 dark:text-gray-100 hover:text-indigo-600">
+                                        {{ $event->device->display_name }}
+                                    </a>
+                                    @if($event->device->mac_address)
+                                        <span class="font-mono text-xs text-gray-400 bg-gray-100 dark:bg-gray-700 px-1 py-0.5 rounded">
+                                            {{ $event->device->mac_address }}
+                                        </span>
+                                    @endif
+                                </div>
+                                <div class="flex items-center gap-3">
+                                    <span class="font-mono text-sm font-bold text-red-600 dark:text-red-400 bg-red-50 dark:bg-red-900/30 px-2 py-0.5 rounded">
+                                        {{ $event->old_value }}
+                                    </span>
+                                    <span class="text-gray-400">→</span>
+                                    <span class="font-mono text-sm font-bold text-green-700 dark:text-green-400 bg-green-50 dark:bg-green-900/30 px-2 py-0.5 rounded">
+                                        {{ $event->new_value }}
+                                    </span>
+                                    <span class="text-xs text-gray-400">{{ $event->created_at->format('d.m.Y H:i') }}</span>
+                                </div>
+                            </div>
+                            {{-- Bestätigen mit Notiz --}}
+                            <form method="POST" action="{{ route('network.document', $event) }}"
+                                  class="flex gap-2 items-center shrink-0">
+                                @csrf
+                                <input type="text" name="description"
+                                       placeholder="Notiz zur Änderung (optional)"
+                                       class="text-xs border-gray-300 dark:border-gray-600 dark:bg-gray-700 dark:text-gray-200 rounded px-2 py-1.5 w-56 focus:ring-indigo-500 focus:border-indigo-500" />
+                                <button type="submit"
+                                        class="shrink-0 text-xs px-3 py-1.5 rounded bg-green-600 text-white hover:bg-green-700 transition font-medium">
+                                    ✓ Quittieren
+                                </button>
+                            </form>
+                        </div>
+                        {{-- IP-Verlauf (sofern vorhanden) --}}
+                        @php
+                            $ipCount = $event->device->hosts()
+                                ->selectRaw('DISTINCT ip_address')
+                                ->count();
+                        @endphp
+                        @if($ipCount > 1)
+                        <div class="mt-2 text-xs text-amber-600 dark:text-amber-400">
+                            📋 Dieses Gerät hatte {{ $ipCount }} verschiedene IP-Adressen —
+                            <a href="{{ route('network.device', $event->device) }}" class="underline hover:no-underline">IP-Verlauf anzeigen →</a>
+                        </div>
+                        @endif
+                    </div>
+                    @endforeach
+                </div>
+            </div>
+            @endif
+
             {{-- Globale Suche --}}
             <div class="bg-white dark:bg-gray-800 shadow-sm rounded-lg p-5">
                 <form method="GET" action="{{ route('network.search') }}" class="flex gap-3">
@@ -80,9 +153,7 @@
                         </thead>
                         <tbody class="divide-y divide-gray-100 dark:divide-gray-700">
                             @foreach($segments as $segment)
-                                @php
+                                @php $lastScan = $latestScans->get($segment->id)?->first(); @endphp
-                                    $lastScan = $latestScans->get($segment->id)?->first();
-                                @endphp
                                 <tr class="hover:bg-gray-50 dark:hover:bg-gray-700 transition">
                                     <td class="px-4 py-3">
                                         <span class="inline-block w-2 h-2 rounded-full {{ $segment->active ? 'bg-green-500' : 'bg-gray-300' }}"></span>
@@ -117,7 +188,7 @@
                 @endif
             </div>
 
-            {{-- Undokumentierte Ereignisse --}}
+            {{-- Sonstige undokumentierte Ereignisse --}}
             @if($recentEvents->count() > 0)
             <div class="bg-white dark:bg-gray-800 shadow-sm rounded-lg overflow-hidden">
                 <div class="px-5 py-4 border-b border-gray-200 dark:border-gray-700">
@@ -128,14 +199,14 @@
                 </div>
                 <div class="divide-y divide-gray-100 dark:divide-gray-700">
                     @foreach($recentEvents as $event)
-                        <div class="flex items-center justify-between px-5 py-3">
+                        <div class="flex items-center justify-between px-5 py-3 gap-4">
-                            <div class="flex items-center space-x-3">
+                            <div class="flex items-center space-x-3 flex-1 min-w-0">
                                 <span class="w-2 h-2 rounded-full flex-shrink-0
                                     {{ $event->event_color === 'green' ? 'bg-green-500' :
                                        ($event->event_color === 'blue' ? 'bg-blue-500' :
                                        ($event->event_color === 'red' ? 'bg-red-500' : 'bg-yellow-500')) }}">
                                 </span>
-                                <div>
+                                <div class="min-w-0">
                                     <span class="text-sm font-medium text-gray-900 dark:text-gray-100">{{ $event->event_label }}</span>
                                     <span class="text-xs text-gray-400 ml-2">
                                         <a href="{{ route('network.device', $event->device) }}" class="hover:text-indigo-600">
@@ -143,10 +214,23 @@
                                         </a>
                                         · {{ $event->created_at->format('d.m.Y H:i') }}
                                     </span>
+                                    @if($event->old_value && $event->new_value)
+                                        <span class="ml-2 text-xs text-gray-400">
+                                            <span class="font-mono">{{ $event->old_value }}</span> → <span class="font-mono">{{ $event->new_value }}</span>
+                                        </span>
+                                    @endif
                                 </div>
                             </div>
-                            <a href="{{ route('network.device', $event->device) }}"
+                            <form method="POST" action="{{ route('network.document', $event) }}"
-                               class="text-xs text-indigo-600 hover:underline">Detail →</a>
+                                  class="flex gap-2 items-center shrink-0">
+                                @csrf
+                                <input type="text" name="description" placeholder="Notiz..."
+                                       class="text-xs border-gray-300 dark:border-gray-600 dark:bg-gray-700 dark:text-gray-200 rounded px-2 py-1 w-40 focus:ring-indigo-500 focus:border-indigo-500" />
+                                <button type="submit"
+                                        class="text-xs px-3 py-1 rounded border border-green-300 text-green-700 hover:bg-green-50 dark:hover:bg-green-900/20 transition whitespace-nowrap">
+                                    ✓ Quittieren
+                                </button>
+                            </form>
                         </div>
                     @endforeach
                 </div>

resources/views/network/device.blade.php

@@ -101,10 +101,33 @@
 
             {{-- IP-Verlauf --}}
             @if($ipHistory->count() > 0)
+            @php
+                $distinctIps = $ipHistory->pluck('ip_address')->unique()->values();
+            @endphp
             <div class="bg-white dark:bg-gray-800 shadow-sm rounded-lg overflow-hidden">
-                <div class="px-5 py-4 border-b border-gray-200 dark:border-gray-700">
+                <div class="px-5 py-4 border-b border-gray-200 dark:border-gray-700 flex items-center justify-between">
                     <h3 class="font-semibold text-gray-900 dark:text-gray-100">IP-Verlauf</h3>
+                    @if($distinctIps->count() > 1)
+                        <span class="text-xs bg-amber-100 text-amber-700 px-2 py-0.5 rounded-full">
+                            ⚠️ {{ $distinctIps->count() }} verschiedene IP-Adressen
+                        </span>
+                    @endif
                 </div>
+
+                {{-- Distinct IPs auf einen Blick --}}
+                @if($distinctIps->count() > 1)
+                <div class="px-5 py-3 bg-amber-50 dark:bg-amber-900/10 border-b border-amber-100 dark:border-amber-800">
+                    <p class="text-xs text-amber-700 dark:text-amber-400 font-medium mb-1">Bekannte IP-Adressen dieses Geräts:</p>
+                    <div class="flex flex-wrap gap-2">
+                        @foreach($distinctIps as $dip)
+                            <span class="font-mono text-xs px-2 py-1 rounded {{ $dip === $device->current_ip ? 'bg-green-100 text-green-800 font-bold' : 'bg-gray-100 text-gray-600 dark:bg-gray-700 dark:text-gray-300' }}">
+                                {{ $dip }}{{ $dip === $device->current_ip ? ' ← aktuell' : '' }}
+                            </span>
+                        @endforeach
+                    </div>
+                </div>
+                @endif
+
                 <table class="min-w-full divide-y divide-gray-100 dark:divide-gray-700 text-sm">
                     <thead class="bg-gray-50 dark:bg-gray-700">
                         <tr>
@@ -116,9 +139,11 @@
                     </thead>
                     <tbody class="divide-y divide-gray-100 dark:divide-gray-700">
                         @foreach($ipHistory as $h)
-                            <tr>
+                            <tr class="{{ $h->ip_address !== $device->current_ip ? 'opacity-60' : '' }}">
                                 <td class="px-4 py-2 text-gray-500 dark:text-gray-400">{{ $h->created_at->format('d.m.Y H:i') }}</td>
-                                <td class="px-4 py-2 font-mono text-gray-900 dark:text-gray-100">{{ $h->ip_address }}</td>
+                                <td class="px-4 py-2 font-mono font-medium {{ $h->ip_address === $device->current_ip ? 'text-green-700 dark:text-green-400' : 'text-gray-600 dark:text-gray-400' }}">
+                                    {{ $h->ip_address }}
+                                </td>
                                 <td class="px-4 py-2">
                                     <span class="text-xs {{ $h->status === 'online' ? 'text-green-600' : 'text-gray-400' }}">{{ $h->status }}</span>
                                 </td>

resources/views/network/history.blade.php

@@ -0,0 +1,175 @@
+<x-app-layout>
+    <x-slot name="header">
+        <div class="flex items-center justify-between">
+            <h2 class="font-semibold text-xl text-gray-800 dark:text-gray-200">Chronologischer IP-Verlauf</h2>
+            <span class="text-xs text-gray-400 dark:text-gray-500">{{ $entries->total() }} Einträge</span>
+        </div>
+    </x-slot>
+
+    <div class="py-8">
+        <div class="max-w-7xl mx-auto sm:px-6 lg:px-8 space-y-4">
+
+            {{-- Filter --}}
+            <form method="GET" action="{{ route('network.history') }}"
+                  class="bg-white dark:bg-gray-800 shadow-sm rounded-lg p-4">
+                <div class="grid grid-cols-2 md:grid-cols-4 gap-3 mb-3">
+                    <div>
+                        <label class="block text-xs text-gray-500 dark:text-gray-400 mb-1">IP-Adresse</label>
+                        <input type="text" name="ip" value="{{ request('ip') }}"
+                               placeholder="z.B. 192.168.86"
+                               class="block w-full border-gray-300 dark:border-gray-600 dark:bg-gray-700 dark:text-gray-200 rounded-md shadow-sm text-sm focus:ring-indigo-500 focus:border-indigo-500" />
+                    </div>
+                    <div>
+                        <label class="block text-xs text-gray-500 dark:text-gray-400 mb-1">MAC-Adresse</label>
+                        <input type="text" name="mac" value="{{ request('mac') }}"
+                               placeholder="z.B. 00:50:56"
+                               class="block w-full border-gray-300 dark:border-gray-600 dark:bg-gray-700 dark:text-gray-200 rounded-md shadow-sm text-sm focus:ring-indigo-500 focus:border-indigo-500" />
+                    </div>
+                    <div>
+                        <label class="block text-xs text-gray-500 dark:text-gray-400 mb-1">Hostname / Bezeichnung</label>
+                        <input type="text" name="hostname" value="{{ request('hostname') }}"
+                               placeholder="z.B. frigo-nas"
+                               class="block w-full border-gray-300 dark:border-gray-600 dark:bg-gray-700 dark:text-gray-200 rounded-md shadow-sm text-sm focus:ring-indigo-500 focus:border-indigo-500" />
+                    </div>
+                    <div>
+                        <label class="block text-xs text-gray-500 dark:text-gray-400 mb-1">Segment</label>
+                        <select name="segment"
+                                class="block w-full border-gray-300 dark:border-gray-600 dark:bg-gray-700 dark:text-gray-200 rounded-md shadow-sm text-sm focus:ring-indigo-500 focus:border-indigo-500">
+                            <option value="">Alle Segmente</option>
+                            @foreach($segments as $seg)
+                                <option value="{{ $seg->id }}" {{ request('segment') == $seg->id ? 'selected' : '' }}>
+                                    {{ $seg->name }}
+                                </option>
+                            @endforeach
+                        </select>
+                    </div>
+                </div>
+                <div class="grid grid-cols-2 md:grid-cols-4 gap-3">
+                    <div>
+                        <label class="block text-xs text-gray-500 dark:text-gray-400 mb-1">Status</label>
+                        <select name="status"
+                                class="block w-full border-gray-300 dark:border-gray-600 dark:bg-gray-700 dark:text-gray-200 rounded-md shadow-sm text-sm focus:ring-indigo-500 focus:border-indigo-500">
+                            <option value="">Alle</option>
+                            <option value="online"  {{ request('status') === 'online'  ? 'selected' : '' }}>Online</option>
+                            <option value="offline" {{ request('status') === 'offline' ? 'selected' : '' }}>Offline</option>
+                        </select>
+                    </div>
+                    <div>
+                        <label class="block text-xs text-gray-500 dark:text-gray-400 mb-1">Von Datum</label>
+                        <input type="date" name="from" value="{{ request('from') }}"
+                               class="block w-full border-gray-300 dark:border-gray-600 dark:bg-gray-700 dark:text-gray-200 rounded-md shadow-sm text-sm focus:ring-indigo-500 focus:border-indigo-500" />
+                    </div>
+                    <div>
+                        <label class="block text-xs text-gray-500 dark:text-gray-400 mb-1">Bis Datum</label>
+                        <input type="date" name="to" value="{{ request('to') }}"
+                               class="block w-full border-gray-300 dark:border-gray-600 dark:bg-gray-700 dark:text-gray-200 rounded-md shadow-sm text-sm focus:ring-indigo-500 focus:border-indigo-500" />
+                    </div>
+                    <div class="flex items-end gap-2">
+                        <button type="submit" style="background-color: var(--color-primary)"
+                                class="flex-1 py-2 text-white text-sm font-medium rounded-md hover:opacity-90 transition">
+                            Filtern
+                        </button>
+                        @if(request()->hasAny(['ip','mac','hostname','segment','status','from','to']))
+                            <a href="{{ route('network.history') }}"
+                               class="py-2 px-3 text-sm font-medium rounded-md border border-gray-300 dark:border-gray-600 text-gray-700 dark:text-gray-300 hover:bg-gray-50 dark:hover:bg-gray-700 transition">
+                                ✕
+                            </a>
+                        @endif
+                    </div>
+                </div>
+            </form>
+
+            {{-- Tabelle --}}
+            <div class="bg-white dark:bg-gray-800 shadow-sm rounded-lg overflow-hidden">
+                <table class="min-w-full divide-y divide-gray-200 dark:divide-gray-700 text-sm">
+                    <thead class="bg-gray-50 dark:bg-gray-700">
+                        <tr>
+                            <th class="px-3 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">Datum / Zeit</th>
+                            <th class="px-3 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">Status</th>
+                            <th class="px-3 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">IP-Adresse</th>
+                            <th class="px-3 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">MAC-Adresse</th>
+                            <th class="px-3 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">Hostname / Bezeichnung</th>
+                            <th class="px-3 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">Hersteller</th>
+                            <th class="px-3 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">Segment</th>
+                            <th class="px-3 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">Ping</th>
+                        </tr>
+                    </thead>
+                    <tbody class="divide-y divide-gray-100 dark:divide-gray-700">
+                        @forelse($entries as $entry)
+                            <tr class="{{ $entry->status === 'online' ? '' : 'opacity-60' }} hover:bg-gray-50 dark:hover:bg-gray-700 transition">
+                                <td class="px-3 py-2 text-xs text-gray-500 dark:text-gray-400 whitespace-nowrap">
+                                    {{ \Carbon\Carbon::parse($entry->scan_time)->format('d.m.Y H:i') }}
+                                    @if($entry->scanner)
+                                        <br><span class="text-gray-400">{{ $entry->scanner }}</span>
+                                    @endif
+                                </td>
+                                <td class="px-3 py-2">
+                                    <span class="inline-flex items-center gap-1">
+                                        <span class="w-2 h-2 rounded-full {{ $entry->status === 'online' ? 'bg-green-500' : 'bg-gray-300' }}"></span>
+                                        <span class="text-xs {{ $entry->status === 'online' ? 'text-green-700 dark:text-green-400' : 'text-gray-400' }}">
+                                            {{ $entry->status }}
+                                        </span>
+                                    </span>
+                                </td>
+                                <td class="px-3 py-2 font-mono font-medium text-gray-900 dark:text-gray-100">
+                                    @if($entry->device_id)
+                                        <a href="{{ route('network.device', $entry->device_id) }}"
+                                           class="text-indigo-600 hover:underline">
+                                            {{ $entry->ip_address }}
+                                        </a>
+                                    @else
+                                        {{ $entry->ip_address }}
+                                    @endif
+                                </td>
+                                <td class="px-3 py-2 font-mono text-xs text-gray-600 dark:text-gray-400">
+                                    @if($entry->mac_address)
+                                        <span title="{{ $entry->mac_address }}">{{ $entry->mac_address }}</span>
+                                    @else
+                                        <span class="text-gray-300">—</span>
+                                    @endif
+                                </td>
+                                <td class="px-3 py-2 text-gray-700 dark:text-gray-300">
+                                    @if($entry->device_label)
+                                        <span class="font-medium">{{ $entry->device_label }}</span>
+                                        @if($entry->hostname)
+                                            <span class="text-xs text-gray-400 ml-1">({{ $entry->hostname }})</span>
+                                        @endif
+                                    @else
+                                        {{ $entry->hostname ?? '—' }}
+                                    @endif
+                                </td>
+                                <td class="px-3 py-2 text-xs text-gray-600 dark:text-gray-400">{{ $entry->mac_vendor ?? '—' }}</td>
+                                <td class="px-3 py-2 text-xs text-gray-500 dark:text-gray-400">
+                                    {{ $entry->segment_name ?? '—' }}
+                                </td>
+                                <td class="px-3 py-2 text-xs text-gray-500 dark:text-gray-400">
+                                    {{ $entry->ping_ms !== null ? $entry->ping_ms . ' ms' : '—' }}
+                                </td>
+                            </tr>
+                        @empty
+                            <tr>
+                                <td colspan="8" class="px-4 py-10 text-center text-gray-500">
+                                    Keine Einträge gefunden.
+                                </td>
+                            </tr>
+                        @endforelse
+                    </tbody>
+                </table>
+
+                @if($entries->hasPages())
+                    <div class="px-4 py-3 border-t border-gray-200 dark:border-gray-700">
+                        {{ $entries->links() }}
+                    </div>
+                @endif
+            </div>
+
+        </div>
+    </div>
+
+    {{-- Auto-Refresh alle 60 Sekunden wenn kein Filter aktiv --}}
+    @unless(request()->hasAny(['ip','mac','hostname','segment','status','from','to']))
+    <script>
+        setTimeout(function() { window.location.reload(); }, 60000);
+    </script>
+    @endunless
+</x-app-layout>

resources/views/network/scan.blade.php

@@ -1,10 +1,26 @@
 <x-app-layout>
     <x-slot name="header">
+        <div class="flex items-center justify-between">
             <div class="flex items-center space-x-2">
-            <a href="{{ route('network.index') }}" class="text-gray-500 hover:text-gray-700">Netzwerk</a>
+                @if($scan->segment)
+                    <a href="{{ route('network.segments.show', $scan->segment) }}" class="text-gray-500 hover:text-gray-700">{{ $scan->segment->name }}</a>
                     <span class="text-gray-400">/</span>
+                @endif
                 <h2 class="font-semibold text-xl text-gray-800 dark:text-gray-200">Scan {{ $scan->created_at->format('d.m.Y H:i') }}</h2>
             </div>
+            @if($scan->segment)
+            <div class="flex gap-2">
+                <a href="{{ route('network.segments.export.xlsx', $scan->segment) }}"
+                   class="px-3 py-2 text-sm font-medium rounded-md border border-gray-300 dark:border-gray-600 text-gray-700 dark:text-gray-300 hover:bg-gray-50 dark:hover:bg-gray-700 transition">
+                    📊 Excel
+                </a>
+                <a href="{{ route('network.segments.export.pdf', $scan->segment) }}"
+                   class="px-3 py-2 text-sm font-medium rounded-md border border-gray-300 dark:border-gray-600 text-gray-700 dark:text-gray-300 hover:bg-gray-50 dark:hover:bg-gray-700 transition">
+                    📄 PDF
+                </a>
+            </div>
+            @endif
+        </div>
     </x-slot>
 
     <div class="py-8">
@@ -32,6 +48,7 @@
                             <th class="px-4 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">Hersteller</th>
                             <th class="px-4 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">Ping</th>
                             <th class="px-4 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">Ports</th>
+                            <th class="px-4 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">Bemerkung</th>
                         </tr>
                     </thead>
                     <tbody class="divide-y divide-gray-100 dark:divide-gray-700">
@@ -54,6 +71,25 @@
                                 <td class="px-4 py-2 text-xs text-gray-600 dark:text-gray-400">{{ $host->mac_vendor ?? '—' }}</td>
                                 <td class="px-4 py-2 text-xs text-gray-600 dark:text-gray-400">{{ $host->ping_ms ? $host->ping_ms . ' ms' : '—' }}</td>
                                 <td class="px-4 py-2 text-xs text-gray-600 dark:text-gray-400 max-w-xs truncate">{{ $host->ports ?? '—' }}</td>
+                                <td class="px-4 py-2 min-w-48">
+                                    @if($scan->segment_id)
+                                    <div class="note-cell" data-ip="{{ $host->ip_address }}">
+                                        <span class="note-display text-xs text-gray-600 dark:text-gray-400 cursor-pointer hover:text-indigo-600 italic"
+                                              title="Klicken zum Bearbeiten">
+                                            {{ $notes[$host->ip_address] ?? '+ Bemerkung' }}
+                                        </span>
+                                        <div class="note-form hidden flex gap-1 items-center">
+                                            <input type="text" maxlength="500"
+                                                   class="note-input flex-1 text-xs border border-gray-300 dark:border-gray-600 dark:bg-gray-700 dark:text-gray-200 rounded px-2 py-1 focus:ring-indigo-500 focus:border-indigo-500"
+                                                   value="{{ $notes[$host->ip_address] ?? '' }}" />
+                                            <button class="note-save text-xs px-2 py-1 rounded text-white" style="background-color: var(--color-primary)">✓</button>
+                                            <button class="note-cancel text-xs px-2 py-1 rounded border border-gray-300 dark:border-gray-600 text-gray-600 dark:text-gray-400">✕</button>
+                                        </div>
+                                    </div>
+                                    @else
+                                        <span class="text-xs text-gray-300">—</span>
+                                    @endif
+                                </td>
                             </tr>
                         @endforeach
                     </tbody>
@@ -61,4 +97,61 @@
             </div>
         </div>
     </div>
+
+    @if($scan->segment_id)
+    <script>
+    (function() {
+        const saveUrl  = '{{ route('network.segments.ip-notes', $scan->segment_id) }}';
+        const csrfToken = '{{ csrf_token() }}';
+
+        document.querySelectorAll('.note-cell').forEach(function(cell) {
+            const ip      = cell.dataset.ip;
+            const display = cell.querySelector('.note-display');
+            const form    = cell.querySelector('.note-form');
+            const input   = cell.querySelector('.note-input');
+            const save    = cell.querySelector('.note-save');
+            const cancel  = cell.querySelector('.note-cancel');
+
+            display.addEventListener('click', function() {
+                display.classList.add('hidden');
+                form.classList.remove('hidden');
+                input.focus();
+            });
+
+            cancel.addEventListener('click', function() {
+                form.classList.add('hidden');
+                display.classList.remove('hidden');
+            });
+
+            save.addEventListener('click', function() {
+                fetch(saveUrl, {
+                    method: 'POST',
+                    headers: {
+                        'Content-Type': 'application/json',
+                        'X-CSRF-TOKEN': csrfToken,
+                        'Accept': 'application/json',
+                    },
+                    body: JSON.stringify({ ip_address: ip, note: input.value }),
+                })
+                .then(r => r.json())
+                .then(function(data) {
+                    if (data.ok) {
+                        display.textContent = input.value || '+ Bemerkung';
+                        form.classList.add('hidden');
+                        display.classList.remove('hidden');
+                    }
+                })
+                .catch(function() {
+                    alert('Fehler beim Speichern.');
+                });
+            });
+
+            input.addEventListener('keydown', function(e) {
+                if (e.key === 'Enter') save.click();
+                if (e.key === 'Escape') cancel.click();
+            });
+        });
+    })();
+    </script>
+    @endif
 </x-app-layout>

resources/views/network/search.blade.php

@@ -26,11 +26,17 @@
             @if($q && strlen($q) < 2)
                 <p class="text-sm text-gray-500">Mindestens 2 Zeichen eingeben.</p>
             @elseif($q)
+                @php $totalFound = $devices->total() + $hostResults->count(); @endphp
                 <p class="text-sm text-gray-500 dark:text-gray-400">
-                    {{ $devices->total() }} Ergebnis(se) für „{{ $q }}" über alle Segmente
+                    {{ $totalFound }} Ergebnis(se) für „{{ $q }}" über alle Segmente
                 </p>
 
+                {{-- Ergebnisse aus network_devices (getracked) --}}
+                @if($devices->count() > 0)
                 <div class="bg-white dark:bg-gray-800 shadow-sm rounded-lg overflow-hidden">
+                    <div class="px-4 py-2 bg-gray-50 dark:bg-gray-700 border-b border-gray-200 dark:border-gray-600">
+                        <span class="text-xs font-semibold text-gray-500 dark:text-gray-400 uppercase tracking-wider">Geräte (bekannt)</span>
+                    </div>
                     <table class="min-w-full divide-y divide-gray-200 dark:divide-gray-700 text-sm">
                         <thead class="bg-gray-50 dark:bg-gray-700">
                             <tr>
@@ -44,20 +50,23 @@
                             </tr>
                         </thead>
                         <tbody class="divide-y divide-gray-100 dark:divide-gray-700">
-                            @forelse($devices as $device)
+                            @foreach($devices as $device)
                                 <tr class="hover:bg-gray-50 dark:hover:bg-gray-700 transition">
                                     <td class="px-4 py-3">
                                         <span class="w-2 h-2 rounded-full inline-block
                                             {{ $device->status === 'online' ? 'bg-green-500' : 'bg-red-400' }}"></span>
                                     </td>
                                     <td class="px-4 py-3 font-mono text-gray-900 dark:text-gray-100 font-medium">{{ $device->current_ip }}</td>
-                                    <td class="px-4 py-3 font-mono text-xs text-gray-600 dark:text-gray-400">{{ $device->mac_address }}</td>
+                                    <td class="px-4 py-3 font-mono text-xs text-gray-600 dark:text-gray-400">{{ $device->mac_address ?? '—' }}</td>
                                     <td class="px-4 py-3 text-gray-900 dark:text-gray-100">
                                         @if($device->label)
                                             <span class="font-medium">{{ $device->label }}</span>
                                             <span class="text-gray-400 text-xs ml-1">({{ $device->hostname }})</span>
                                         @else
-                                            {{ $device->hostname ?? '—' }}
+                                            {{ $device->hostname ?? $device->netbios_name ?? '—' }}
+                                        @endif
+                                        @if($device->netbios_name && $device->netbios_name !== $device->hostname)
+                                            <span class="block text-xs text-gray-400">NetBIOS: {{ $device->netbios_name }}</span>
                                         @endif
                                     </td>
                                     <td class="px-4 py-3 text-xs text-gray-600 dark:text-gray-400">{{ $device->mac_vendor ?? '—' }}</td>
@@ -69,14 +78,9 @@
                                            class="text-xs text-indigo-600 hover:underline">Detail →</a>
                                     </td>
                                 </tr>
-                            @empty
+                            @endforeach
-                                <tr>
-                                    <td colspan="7" class="px-4 py-10 text-center text-gray-500">Keine Geräte gefunden.</td>
-                                </tr>
-                            @endforelse
                         </tbody>
                     </table>
-
                     @if($devices->hasPages())
                         <div class="px-4 py-3 border-t border-gray-200 dark:border-gray-700">
                             {{ $devices->links() }}
@@ -85,6 +89,61 @@
                 </div>
                 @endif
 
+                {{-- Ergebnisse aus network_hosts (Scan-Treffer ohne Device-Eintrag) --}}
+                @if($hostResults->count() > 0)
+                <div class="bg-white dark:bg-gray-800 shadow-sm rounded-lg overflow-hidden">
+                    <div class="px-4 py-2 bg-blue-50 dark:bg-blue-900/20 border-b border-blue-100 dark:border-blue-800 flex items-center justify-between">
+                        <span class="text-xs font-semibold text-blue-600 dark:text-blue-400 uppercase tracking-wider">
+                            In Scan-Verlauf gefunden
+                        </span>
+                        <span class="text-xs text-blue-400">Noch kein Geräteeintrag — wird beim nächsten Scan angelegt</span>
+                    </div>
+                    <table class="min-w-full divide-y divide-gray-200 dark:divide-gray-700 text-sm">
+                        <thead class="bg-gray-50 dark:bg-gray-700">
+                            <tr>
+                                <th class="px-4 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">Status</th>
+                                <th class="px-4 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">IP-Adresse</th>
+                                <th class="px-4 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">MAC-Adresse</th>
+                                <th class="px-4 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">Hostname</th>
+                                <th class="px-4 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">Hersteller</th>
+                                <th class="px-4 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">Segment</th>
+                                <th class="px-4 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">Letzter Scan</th>
+                                <th class="px-4 py-3"></th>
+                            </tr>
+                        </thead>
+                        <tbody class="divide-y divide-gray-100 dark:divide-gray-700">
+                            @foreach($hostResults as $host)
+                                <tr class="hover:bg-gray-50 dark:hover:bg-gray-700 transition">
+                                    <td class="px-4 py-3">
+                                        <span class="w-2 h-2 rounded-full inline-block
+                                            {{ $host->status === 'online' ? 'bg-green-500' : 'bg-gray-300' }}"></span>
+                                    </td>
+                                    <td class="px-4 py-3 font-mono font-medium text-gray-900 dark:text-gray-100">{{ $host->ip_address }}</td>
+                                    <td class="px-4 py-3 font-mono text-xs text-gray-500 dark:text-gray-400">{{ $host->mac_address ?? '—' }}</td>
+                                    <td class="px-4 py-3 text-gray-700 dark:text-gray-300">{{ $host->hostname ?? '—' }}</td>
+                                    <td class="px-4 py-3 text-xs text-gray-500 dark:text-gray-400">{{ $host->mac_vendor ?? '—' }}</td>
+                                    <td class="px-4 py-3 text-xs text-gray-500 dark:text-gray-400">{{ $host->segment_name ?? '—' }}</td>
+                                    <td class="px-4 py-3 text-xs text-gray-400">
+                                        {{ \Carbon\Carbon::parse($host->scan_time)->format('d.m.Y H:i') }}
+                                    </td>
+                                    <td class="px-4 py-3 text-right">
+                                        <a href="{{ route('network.scan', $host->scan_id) }}"
+                                           class="text-xs text-indigo-600 hover:underline">Scan →</a>
+                                    </td>
+                                </tr>
+                            @endforeach
+                        </tbody>
+                    </table>
+                </div>
+                @endif
+
+                @if($totalFound === 0)
+                    <div class="bg-white dark:bg-gray-800 shadow-sm rounded-lg px-4 py-10 text-center text-gray-500">
+                        Keine Ergebnisse für „{{ $q }}" gefunden.
+                    </div>
+                @endif
+            @endif
+
         </div>
     </div>
 </x-app-layout>

resources/views/network/segments/create.blade.php

@@ -22,9 +22,16 @@
 
                     <div>
                         <x-input-label for="subnet" value="Subnetz *" />
-                        <x-text-input id="subnet" name="subnet" type="text" class="mt-1 block w-full font-mono"
+                        <div class="flex gap-2 mt-1">
+                            <x-text-input id="subnet" name="subnet" type="text" class="block w-full font-mono"
                                 value="{{ old('subnet') }}" placeholder="z.B. 192.168.1.0/24 oder 10.0.0.0/8" required />
+                            <button type="button" id="detect-subnet-btn"
+                                    class="shrink-0 px-3 py-2 text-sm font-medium rounded-md border border-gray-300 dark:border-gray-600 text-gray-700 dark:text-gray-300 hover:bg-gray-50 dark:hover:bg-gray-700 transition">
+                                🔍 Erkennen
+                            </button>
+                        </div>
                         <x-input-error :messages="$errors->get('subnet')" class="mt-1" />
+                        <div id="subnet-suggestions" class="mt-1 hidden"></div>
                     </div>
 
                     <div>
@@ -41,6 +48,29 @@
                             placeholder="Kurze Beschreibung dieses Segments...">{{ old('description') }}</textarea>
                     </div>
 
+                    <div>
+                        <x-input-label for="scan_interval_minutes" value="Scan-Zyklus (automatisch)" />
+                        <select id="scan_interval_minutes" name="scan_interval_minutes"
+                                class="mt-1 block w-full border-gray-300 dark:border-gray-600 dark:bg-gray-700 dark:text-gray-200 rounded-md shadow-sm text-sm focus:ring-indigo-500 focus:border-indigo-500">
+                            <option value="">Manuell (kein Auto-Scan)</option>
+                            <option value="5"    {{ old('scan_interval_minutes') == '5'    ? 'selected' : '' }}>Alle 5 Minuten</option>
+                            <option value="15"   {{ old('scan_interval_minutes') == '15'   ? 'selected' : '' }}>Alle 15 Minuten</option>
+                            <option value="30"   {{ old('scan_interval_minutes') == '30'   ? 'selected' : '' }}>Alle 30 Minuten</option>
+                            <option value="60"   {{ old('scan_interval_minutes') == '60'   ? 'selected' : '' }}>Stündlich</option>
+                            <option value="360"  {{ old('scan_interval_minutes') == '360'  ? 'selected' : '' }}>Alle 6 Stunden</option>
+                            <option value="720"  {{ old('scan_interval_minutes') == '720'  ? 'selected' : '' }}>Alle 12 Stunden</option>
+                            <option value="1440" {{ old('scan_interval_minutes') == '1440' ? 'selected' : '' }}>Täglich</option>
+                        </select>
+                        <p class="mt-1 text-xs text-gray-500">Erfordert aktiven Laravel Scheduler (Cron).</p>
+                    </div>
+
+                    <div>
+                        <x-input-label for="nmap_options" value="nmap-Parameter" />
+                        <x-text-input id="nmap_options" name="nmap_options" type="text" class="mt-1 block w-full font-mono"
+                            value="{{ old('nmap_options', '-sn') }}" placeholder="-sn" />
+                        <p class="mt-1 text-xs text-gray-500">-sn = Ping-Scan (schnell) · -sn -p 22,80,443 = mit Ports</p>
+                    </div>
+
                     <div class="flex items-center gap-2">
                         <input type="checkbox" id="active" name="active" value="1"
                                {{ old('active', '1') ? 'checked' : '' }}
@@ -62,4 +92,38 @@
             </div>
         </div>
     </div>
+<script>
+document.getElementById('detect-subnet-btn').addEventListener('click', function() {
+    const btn = this;
+    const suggestions = document.getElementById('subnet-suggestions');
+    btn.textContent = '⏳ Suche...';
+    btn.disabled = true;
+
+    fetch('{{ route('network.detect-subnets') }}', {
+        headers: { 'Accept': 'application/json', 'X-Requested-With': 'XMLHttpRequest' }
+    })
+    .then(r => r.json())
+    .then(function(subnets) {
+        btn.textContent = '🔍 Erkennen';
+        btn.disabled = false;
+        if (!subnets.length) {
+            suggestions.innerHTML = '<p class="text-xs text-gray-400">Keine Daten in der Datenbank gefunden.</p>';
+            suggestions.classList.remove('hidden');
+            return;
+        }
+        suggestions.innerHTML = '<p class="text-xs text-gray-500 mb-1">Erkannte Subnetze – klicken zum Übernehmen:</p>' +
+            subnets.map(function(s) {
+                return '<button type="button" onclick="document.getElementById(\'subnet\').value=\'' + s + '\'" ' +
+                       'class="mr-1 mb-1 px-2 py-1 text-xs font-mono rounded border border-indigo-300 text-indigo-700 hover:bg-indigo-50 transition">' + s + '</button>';
+            }).join('');
+        suggestions.classList.remove('hidden');
+    })
+    .catch(function() {
+        btn.textContent = '🔍 Erkennen';
+        btn.disabled = false;
+        suggestions.innerHTML = '<p class="text-xs text-red-500">Fehler bei der Erkennung.</p>';
+        suggestions.classList.remove('hidden');
+    });
+});
+</script>
 </x-app-layout>

resources/views/network/segments/edit.blade.php

@@ -22,9 +22,16 @@
 
                     <div>
                         <x-input-label for="subnet" value="Subnetz *" />
-                        <x-text-input id="subnet" name="subnet" type="text" class="mt-1 block w-full font-mono"
+                        <div class="flex gap-2 mt-1">
+                            <x-text-input id="subnet" name="subnet" type="text" class="block w-full font-mono"
                                 value="{{ old('subnet', $segment->subnet) }}" required />
+                            <button type="button" id="detect-subnet-btn"
+                                    class="shrink-0 px-3 py-2 text-sm font-medium rounded-md border border-gray-300 dark:border-gray-600 text-gray-700 dark:text-gray-300 hover:bg-gray-50 dark:hover:bg-gray-700 transition">
+                                🔍 Erkennen
+                            </button>
+                        </div>
                         <x-input-error :messages="$errors->get('subnet')" class="mt-1" />
+                        <div id="subnet-suggestions" class="mt-1 hidden"></div>
                     </div>
 
                     <div>
@@ -40,6 +47,26 @@
                             class="mt-1 block w-full border-gray-300 dark:border-gray-600 dark:bg-gray-700 dark:text-gray-200 rounded-md shadow-sm text-sm focus:ring-indigo-500 focus:border-indigo-500">{{ old('description', $segment->description) }}</textarea>
                     </div>
 
+                    <div>
+                        <x-input-label for="scan_interval_minutes" value="Scan-Zyklus (automatisch)" />
+                        <select id="scan_interval_minutes" name="scan_interval_minutes"
+                                class="mt-1 block w-full border-gray-300 dark:border-gray-600 dark:bg-gray-700 dark:text-gray-200 rounded-md shadow-sm text-sm focus:ring-indigo-500 focus:border-indigo-500">
+                            <option value="">Manuell (kein Auto-Scan)</option>
+                            @foreach([5 => 'Alle 5 Minuten', 15 => 'Alle 15 Minuten', 30 => 'Alle 30 Minuten', 60 => 'Stündlich', 360 => 'Alle 6 Stunden', 720 => 'Alle 12 Stunden', 1440 => 'Täglich'] as $val => $label)
+                                <option value="{{ $val }}" {{ old('scan_interval_minutes', $segment->scan_interval_minutes) == $val ? 'selected' : '' }}>
+                                    {{ $label }}
+                                </option>
+                            @endforeach
+                        </select>
+                    </div>
+
+                    <div>
+                        <x-input-label for="nmap_options" value="nmap-Parameter" />
+                        <x-text-input id="nmap_options" name="nmap_options" type="text" class="mt-1 block w-full font-mono"
+                            value="{{ old('nmap_options', $segment->nmap_options) }}" placeholder="-sn" />
+                        <p class="mt-1 text-xs text-gray-500">-sn = Ping-Scan · -sn -p 22,80,443 = mit Ports</p>
+                    </div>
+
                     <div class="flex items-center gap-2">
                         <input type="checkbox" id="active" name="active" value="1"
                                {{ old('active', $segment->active) ? 'checked' : '' }}
@@ -61,4 +88,38 @@
             </div>
         </div>
     </div>
+<script>
+document.getElementById('detect-subnet-btn').addEventListener('click', function() {
+    const btn = this;
+    const suggestions = document.getElementById('subnet-suggestions');
+    btn.textContent = '⏳ Suche...';
+    btn.disabled = true;
+
+    fetch('{{ route('network.detect-subnets') }}', {
+        headers: { 'Accept': 'application/json', 'X-Requested-With': 'XMLHttpRequest' }
+    })
+    .then(r => r.json())
+    .then(function(subnets) {
+        btn.textContent = '🔍 Erkennen';
+        btn.disabled = false;
+        if (!subnets.length) {
+            suggestions.innerHTML = '<p class="text-xs text-gray-400">Keine Daten in der Datenbank gefunden.</p>';
+            suggestions.classList.remove('hidden');
+            return;
+        }
+        suggestions.innerHTML = '<p class="text-xs text-gray-500 mb-1">Erkannte Subnetze – klicken zum Übernehmen:</p>' +
+            subnets.map(function(s) {
+                return '<button type="button" onclick="document.getElementById(\'subnet\').value=\'' + s + '\'" ' +
+                       'class="mr-1 mb-1 px-2 py-1 text-xs font-mono rounded border border-indigo-300 text-indigo-700 hover:bg-indigo-50 transition">' + s + '</button>';
+            }).join('');
+        suggestions.classList.remove('hidden');
+    })
+    .catch(function() {
+        btn.textContent = '🔍 Erkennen';
+        btn.disabled = false;
+        suggestions.innerHTML = '<p class="text-xs text-red-500">Fehler bei der Erkennung.</p>';
+        suggestions.classList.remove('hidden');
+    });
+});
+</script>
 </x-app-layout>

resources/views/network/segments/export-pdf.blade.php

@@ -0,0 +1,165 @@
+<!DOCTYPE html>
+<html lang="de">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Segment {{ $segment->name }} – Export</title>
+    <style>
+        * { box-sizing: border-box; margin: 0; padding: 0; }
+
+        body {
+            font-family: Arial, sans-serif;
+            font-size: 11px;
+            color: #1f2937;
+            padding: 20px;
+            background: white;
+        }
+
+        .header {
+            display: flex;
+            justify-content: space-between;
+            align-items: flex-start;
+            margin-bottom: 16px;
+            padding-bottom: 12px;
+            border-bottom: 2px solid #e5e7eb;
+        }
+
+        h1 { font-size: 18px; font-weight: bold; color: #111827; }
+
+        .meta {
+            font-size: 11px;
+            color: #6b7280;
+            margin-top: 4px;
+            line-height: 1.5;
+        }
+
+        .print-btn {
+            background: #4f46e5;
+            color: white;
+            border: none;
+            padding: 8px 16px;
+            border-radius: 6px;
+            cursor: pointer;
+            font-size: 13px;
+            font-weight: 600;
+        }
+
+        .print-btn:hover { background: #4338ca; }
+
+        table {
+            width: 100%;
+            border-collapse: collapse;
+            font-size: 10px;
+        }
+
+        thead th {
+            background-color: #f3f4f6;
+            border: 1px solid #d1d5db;
+            padding: 6px 8px;
+            text-align: left;
+            font-size: 9px;
+            font-weight: 700;
+            text-transform: uppercase;
+            color: #6b7280;
+            letter-spacing: 0.05em;
+        }
+
+        tbody td {
+            border: 1px solid #e5e7eb;
+            padding: 5px 8px;
+            vertical-align: top;
+        }
+
+        tbody tr:nth-child(even) td { background-color: #f9fafb; }
+        tbody tr:hover td { background-color: #eff6ff; }
+
+        .online  { color: #16a34a; font-weight: 700; }
+        .offline { color: #9ca3af; }
+        .mono    { font-family: 'Courier New', monospace; }
+        .note    { color: #4b5563; font-style: italic; }
+
+        .footer {
+            margin-top: 12px;
+            font-size: 9px;
+            color: #9ca3af;
+            text-align: right;
+        }
+
+        /* Print-Stile */
+        @media print {
+            .no-print { display: none !important; }
+            body { padding: 0; font-size: 10px; }
+            thead th { background-color: #f3f4f6 !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
+            tbody tr:nth-child(even) td { background-color: #f9fafb !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
+            @page { size: A4 landscape; margin: 1.5cm; }
+        }
+    </style>
+</head>
+<body>
+
+<div class="header">
+    <div>
+        <h1>🌐 Segment: {{ $segment->name }}</h1>
+        <div class="meta">
+            Subnetz: <strong>{{ $segment->subnet }}</strong>
+            @if($segment->vlan_id) &nbsp;·&nbsp; VLAN {{ $segment->vlan_id }} @endif
+            &nbsp;·&nbsp; {{ $hosts->count() }} Hosts
+            &nbsp;·&nbsp; {{ $hosts->where('status', 'online')->count() }} online
+            <br>
+            Exportiert: {{ now()->format('d.m.Y H:i') }}
+            @if($segment->description) &nbsp;·&nbsp; {{ $segment->description }} @endif
+        </div>
+    </div>
+    <button class="print-btn no-print" onclick="window.print()">🖨️ Als PDF drucken</button>
+</div>
+
+<table>
+    <thead>
+        <tr>
+            <th style="width:7%">Status</th>
+            <th style="width:12%">IP-Adresse</th>
+            <th style="width:16%">MAC-Adresse</th>
+            <th style="width:18%">Hostname</th>
+            <th style="width:14%">Hersteller</th>
+            <th style="width:7%">Ping</th>
+            <th>Bemerkung</th>
+        </tr>
+    </thead>
+    <tbody>
+        @forelse($hosts as $host)
+        <tr>
+            <td class="{{ $host->status === 'online' ? 'online' : 'offline' }}">
+                {{ $host->status === 'online' ? '● Online' : '○ Offline' }}
+            </td>
+            <td class="mono">{{ $host->ip_address }}</td>
+            <td class="mono">{{ $host->mac_address ?? '—' }}</td>
+            <td>{{ $host->hostname ?? '—' }}</td>
+            <td>{{ $host->mac_vendor ?? '—' }}</td>
+            <td class="mono">{{ $host->ping_ms !== null ? $host->ping_ms . ' ms' : '—' }}</td>
+            <td class="note">{{ $notes[$host->ip_address] ?? '' }}</td>
+        </tr>
+        @empty
+        <tr>
+            <td colspan="7" style="text-align:center; padding:24px; color:#9ca3af;">
+                Keine Hosts vorhanden.
+            </td>
+        </tr>
+        @endforelse
+    </tbody>
+</table>
+
+<div class="footer">
+    Network-MGMT · MMS System Service · {{ now()->format('d.m.Y H:i') }}
+</div>
+
+<script>
+    // Automatisch Druckdialog öffnen (nur wenn direkt als PDF aufgerufen)
+    if (window.location.pathname.includes('/export/pdf')) {
+        window.addEventListener('load', function() {
+            setTimeout(function() { window.print(); }, 300);
+        });
+    }
+</script>
+
+</body>
+</html>

resources/views/network/segments/show.blade.php

@@ -6,14 +6,37 @@
                 <span class="text-gray-400">/</span>
                 <h2 class="font-semibold text-xl text-gray-800 dark:text-gray-200">{{ $segment->name }}</h2>
             </div>
-            <div class="flex gap-2">
+            <div class="flex gap-2 items-center">
-                <a href="{{ route('network.import') }}?segment={{ $segment->id }}"
+                {{-- Auto-Refresh Indikator --}}
-                   style="background-color: var(--color-primary)"
+                <span id="refresh-indicator" class="text-xs text-gray-400 dark:text-gray-500 hidden">
+                    ↻ wird aktualisiert...
+                </span>
+
+                {{-- Jetzt scannen --}}
+                @if($segment->active)
+                <form method="POST" action="{{ route('network.segments.scan', $segment) }}">
+                    @csrf
+                    <button type="submit" style="background-color: var(--color-primary)"
                             class="px-4 py-2 text-white text-sm font-medium rounded-md hover:opacity-90 transition">
-                    + Scan importieren
+                        ▶ Jetzt scannen
+                    </button>
+                </form>
+                @endif
+
+                <a href="{{ route('network.import') }}?segment={{ $segment->id }}"
+                   class="px-4 py-2 text-sm font-medium rounded-md border border-gray-300 dark:border-gray-600 text-gray-700 dark:text-gray-300 hover:bg-gray-50 dark:hover:bg-gray-700 transition">
+                    ⬆ Import
+                </a>
+                <a href="{{ route('network.segments.export.xlsx', $segment) }}"
+                   class="px-4 py-2 text-sm font-medium rounded-md border border-gray-300 dark:border-gray-600 text-gray-700 dark:text-gray-300 hover:bg-gray-50 dark:hover:bg-gray-700 transition">
+                    📊 Excel
+                </a>
+                <a href="{{ route('network.segments.export.pdf', $segment) }}"
+                   class="px-4 py-2 text-sm font-medium rounded-md border border-gray-300 dark:border-gray-600 text-gray-700 dark:text-gray-300 hover:bg-gray-50 dark:hover:bg-gray-700 transition">
+                    📄 PDF
                 </a>
                 <a href="{{ route('network.segments.edit', $segment) }}"
-                   class="px-4 py-2 text-sm font-medium rounded-md border border-gray-300 dark:border-gray-600 text-gray-700 dark:text-gray-300 hover:bg-gray-50 transition">
+                   class="px-4 py-2 text-sm font-medium rounded-md border border-gray-300 dark:border-gray-600 text-gray-700 dark:text-gray-300 hover:bg-gray-50 dark:hover:bg-gray-700 transition">
                     Bearbeiten
                 </a>
             </div>
@@ -39,6 +62,12 @@
                         {{ $segment->active ? 'Aktiv' : 'Inaktiv' }}
                     </p>
                 </div>
+                <div class="bg-white dark:bg-gray-800 rounded-lg shadow-sm p-4">
+                    <p class="text-xs text-gray-500 dark:text-gray-400 uppercase tracking-wider">Auto-Scan</p>
+                    <p class="mt-1 font-bold text-gray-900 dark:text-gray-100 text-sm">
+                        {{ $segment->scan_interval_label }}
+                    </p>
+                </div>
                 <div class="bg-white dark:bg-gray-800 rounded-lg shadow-sm p-4">
                     <p class="text-xs text-gray-500 dark:text-gray-400 uppercase tracking-wider">Scans gesamt</p>
                     <p class="mt-1 font-bold text-gray-900 dark:text-gray-100">{{ $scans->total() }}</p>
@@ -70,6 +99,7 @@
                 <div class="px-5 py-4 border-b border-gray-200 dark:border-gray-700">
                     <h3 class="font-semibold text-gray-900 dark:text-gray-100">Scan-Historie</h3>
                 </div>
+                <div data-scan-count="{{ $scans->total() }}"></div>
                 <table class="min-w-full divide-y divide-gray-200 dark:divide-gray-700 text-sm">
                     <thead class="bg-gray-50 dark:bg-gray-700">
                         <tr>
@@ -112,4 +142,33 @@
 
         </div>
     </div>
+
+    @if(session('success') && str_contains(session('success'), 'gestartet'))
+    {{-- Auto-Refresh nach "Jetzt scannen": alle 10s prüfen ob neuer Scan vorliegt --}}
+    <script>
+        (function() {
+            const currentScanCount = {{ $scans->total() }};
+            const indicator = document.getElementById('refresh-indicator');
+            let checks = 0;
+
+            const interval = setInterval(function() {
+                if (++checks > 18) { clearInterval(interval); return; } // max 3 Min
+                if (indicator) indicator.classList.remove('hidden');
+
+                fetch(window.location.href, { headers: { 'X-Requested-With': 'XMLHttpRequest' } })
+                    .then(r => r.text())
+                    .then(html => {
+                        const parser = new DOMParser();
+                        const doc = parser.parseFromString(html, 'text/html');
+                        const newCount = parseInt(doc.querySelector('[data-scan-count]')?.dataset?.scanCount || '0');
+                        if (newCount > currentScanCount) {
+                            clearInterval(interval);
+                            window.location.reload();
+                        }
+                    })
+                    .catch(() => {});
+            }, 10000);
+        })();
+    </script>
+    @endif
 </x-app-layout>

routes/console.php

@@ -1,8 +1,17 @@
 <?php
 
+use App\Models\NetworkSegment;
 use Illuminate\Foundation\Inspiring;
 use Illuminate\Support\Facades\Artisan;
+use Illuminate\Support\Facades\Schedule;
 
 Artisan::command('inspire', function () {
     $this->comment(Inspiring::quote());
 })->purpose('Display an inspiring quote');
+
+// Netzwerk-Scans automatisch ausführen
+// Der Scheduler prüft jede Minute ob ein Segment fällig ist
+Schedule::command('network:scan')
+    ->everyMinute()
+    ->withoutOverlapping()
+    ->runInBackground();

routes/web.php

@@ -42,12 +42,26 @@ Route::prefix('network')
         // Dashboard
         Route::get('/', [NetworkController::class, 'dashboard'])->name('dashboard');
 
+        // Subnetz-Erkennung (JSON)
+        Route::get('/detect-subnets', [NetworkController::class, 'detectSubnets'])->name('detect-subnets');
+
         // Globale Suche
         Route::get('/search', [NetworkController::class, 'search'])->name('search');
 
-        // Segmente (CRUD)
+        // Segmente (CRUD + Scan auslösen)
         Route::resource('segments', NetworkSegmentController::class)
             ->names('segments');
+        Route::post('segments/{segment}/scan', [NetworkSegmentController::class, 'triggerScan'])
+            ->name('segments.scan');
+        Route::post('segments/{segment}/ip-notes', [NetworkSegmentController::class, 'saveIpNote'])
+            ->name('segments.ip-notes');
+        Route::get('segments/{segment}/export/xlsx', [NetworkSegmentController::class, 'exportXlsx'])
+            ->name('segments.export.xlsx');
+        Route::get('segments/{segment}/export/pdf', [NetworkSegmentController::class, 'exportPdf'])
+            ->name('segments.export.pdf');
+
+        // Chronologischer IP-Verlauf
+        Route::get('/history', [NetworkController::class, 'history'])->name('history');
 
         // Geräte
         Route::get('/devices', [NetworkController::class, 'devices'])->name('devices');