diff --git a/TODO.md b/TODO.md
index e3d6d12..81c30cc 100644
--- a/TODO.md
+++ b/TODO.md
@@ -234,3 +234,10 @@ Hinweis: Die Eintraege sind direkt aus den Quelldateien aggregiert.
 - [ ] L253: - TODO: SVG-Editor um Drag & Drop für diese Objekte erweitern und Klicks direkt mit dem Modul verbinden.
 
 - [ ] //TODO infrastruktur patchfelder löschen soll implementiert werden.
+
+## Topologie-Abgleich (16. Februar 2026)
+
+- [ ] #TODO: `connections.port_a_type` und `connections.port_b_type` um einen Patchpanel-Port-Typ erweitern (z. B. `patchpanel`) und auf `floor_patchpanel_ports.id` referenzieren.
+- [ ] #TODO: Business-Regeln fuer Topologie in der Verbindungs-Validierung hinterlegen: Patchpanel-Port nur mit Patchpanel-Port oder Netzwerkbuchsen-Port verbinden.
+- [ ] #TODO: Port-CRUD fuer Patchpanels ergaenzen: `floor_patchpanel_ports` beim Speichern aus `port_count` erzeugen/synchronisieren.
+- [ ] #TODO: Port-CRUD fuer Netzwerkbuchsen ergaenzen: `network_outlet_ports` pflegen (mindestens ein Port je Buchse) und fuer Verbindungen nutzbar machen.
diff --git a/app/modules/connections/list.php b/app/modules/connections/list.php
index 5c24022..52c13e5 100644
--- a/app/modules/connections/list.php
+++ b/app/modules/connections/list.php
@@ -14,6 +14,49 @@
 $search = trim($_GET['search'] ?? '');
 $deviceId = (int)($_GET['device_id'] ?? 0);
 
+// Einheitliche Endpunkt-Aufloesung fuer polymorphe Port-Typen.
+$endpointUnionSql = "
+    SELECT
+        'device' AS endpoint_type,
+        dp.id AS endpoint_id,
+        dp.name AS port_name,
+        d.name AS owner_name,
+        d.id AS owner_device_id
+    FROM device_ports dp
+    JOIN devices d ON d.id = dp.device_id
+    UNION ALL
+    SELECT
+        'module' AS endpoint_type,
+        mp.id AS endpoint_id,
+        mp.name AS port_name,
+        CONCAT(d.name, ' / ', m.name) AS owner_name,
+        d.id AS owner_device_id
+    FROM module_ports mp
+    JOIN modules m ON m.id = mp.module_id
+    JOIN devices d ON d.id = m.device_id
+    UNION ALL
+    SELECT
+        'outlet' AS endpoint_type,
+        nop.id AS endpoint_id,
+        nop.name AS port_name,
+        CONCAT(no.name, ' / ', IFNULL(r.name, ''), ' / ', IFNULL(f.name, '')) AS owner_name,
+        NULL AS owner_device_id
+    FROM network_outlet_ports nop
+    JOIN network_outlets no ON no.id = nop.outlet_id
+    LEFT JOIN rooms r ON r.id = no.room_id
+    LEFT JOIN floors f ON f.id = r.floor_id
+    UNION ALL
+    SELECT
+        'floor_patchpanel' AS endpoint_type,
+        fpp.id AS endpoint_id,
+        fpp.name AS port_name,
+        CONCAT(fp.name, ' / ', IFNULL(f.name, '')) AS owner_name,
+        NULL AS owner_device_id
+    FROM floor_patchpanel_ports fpp
+    JOIN floor_patchpanels fp ON fp.id = fpp.patchpanel_id
+    LEFT JOIN floors f ON f.id = fp.floor_id
+";
+
 // =========================
 // WHERE-Clause bauen
 // =========================
@@ -22,7 +65,7 @@ $types = '';
 $params = [];
 
 if ($search !== '') {
-    $where[] = "(d1.name LIKE ? OR d2.name LIKE ? OR dpt1.name LIKE ? OR dpt2.name LIKE ?)";
+    $where[] = "(e1.owner_name LIKE ? OR e2.owner_name LIKE ? OR e1.port_name LIKE ? OR e2.port_name LIKE ?)";
     $types .= "ssss";
     $params[] = "%$search%";
     $params[] = "%$search%";
@@ -31,7 +74,7 @@ if ($search !== '') {
 }
 
 if ($deviceId > 0) {
-    $where[] = "(d1.id = ? OR d2.id = ?)";
+    $where[] = "(e1.owner_device_id = ? OR e2.owner_device_id = ?)";
     $types .= "ii";
     $params[] = $deviceId;
     $params[] = $deviceId;
@@ -46,19 +89,35 @@ $connections = $sql->get(
     "SELECT
         c.id,
         c.port_a_type, c.port_a_id, c.port_b_type, c.port_b_id,
-        d1.name AS device_a_name,
-        d2.name AS device_b_name,
-        dpt1.name AS port_a_name,
-        dpt2.name AS port_b_name,
+        e1.owner_name AS endpoint_a_name,
+        e2.owner_name AS endpoint_b_name,
+        e1.port_name AS port_a_name,
+        e2.port_name AS port_b_name,
         c.vlan_config,
         c.comment
     FROM connections c
-    LEFT JOIN device_ports dpt1 ON c.port_a_type = 'device' AND c.port_a_id = dpt1.id
-    LEFT JOIN devices d1 ON dpt1.device_id = d1.id
-    LEFT JOIN device_ports dpt2 ON c.port_b_type = 'device' AND c.port_b_id = dpt2.id
-    LEFT JOIN devices d2 ON dpt2.device_id = d2.id
+    LEFT JOIN ($endpointUnionSql) e1
+        ON c.port_a_id = e1.endpoint_id
+       AND (
+           c.port_a_type = e1.endpoint_type
+           OR (c.port_a_type = 'device_ports' AND e1.endpoint_type = 'device')
+           OR (c.port_a_type = 'module_ports' AND e1.endpoint_type = 'module')
+           OR (c.port_a_type = 'network_outlet_ports' AND e1.endpoint_type = 'outlet')
+           OR (c.port_a_type = 'floor_patchpanel_ports' AND e1.endpoint_type = 'floor_patchpanel')
+           OR (c.port_a_type = 'patchpanel' AND e1.endpoint_type = 'floor_patchpanel')
+       )
+    LEFT JOIN ($endpointUnionSql) e2
+        ON c.port_b_id = e2.endpoint_id
+       AND (
+           c.port_b_type = e2.endpoint_type
+           OR (c.port_b_type = 'device_ports' AND e2.endpoint_type = 'device')
+           OR (c.port_b_type = 'module_ports' AND e2.endpoint_type = 'module')
+           OR (c.port_b_type = 'network_outlet_ports' AND e2.endpoint_type = 'outlet')
+           OR (c.port_b_type = 'floor_patchpanel_ports' AND e2.endpoint_type = 'floor_patchpanel')
+           OR (c.port_b_type = 'patchpanel' AND e2.endpoint_type = 'floor_patchpanel')
+       )
     $whereSql
-    ORDER BY d1.name, d2.name",
+    ORDER BY e1.owner_name, e2.owner_name",
     $types,
     $params
 );
@@ -84,29 +143,65 @@ if ($deviceId > 0) {
 
     if ($selectedDevice) {
         $selectedDevice['port_count'] = (int)($sql->single(
-            "SELECT COUNT(*) AS cnt FROM device_ports WHERE device_id = ?",
-            "i",
-            [$deviceId]
+            "SELECT COUNT(*) AS cnt
+             FROM (
+                 SELECT dp.id
+                 FROM device_ports dp
+                 WHERE dp.device_id = ?
+                 UNION ALL
+                 SELECT mp.id
+                 FROM module_ports mp
+                 JOIN modules m ON m.id = mp.module_id
+                 WHERE m.device_id = ?
+             ) p",
+            "ii",
+            [$deviceId, $deviceId]
         )['cnt'] ?? 0);
 
         $selectedDevice['connection_count'] = (int)($sql->single(
             "SELECT COUNT(DISTINCT c.id) AS cnt
              FROM connections c
-             LEFT JOIN device_ports dpt1 ON c.port_a_type = 'device' AND c.port_a_id = dpt1.id
-             LEFT JOIN device_ports dpt2 ON c.port_b_type = 'device' AND c.port_b_id = dpt2.id
-             WHERE dpt1.device_id = ? OR dpt2.device_id = ?",
+             LEFT JOIN ($endpointUnionSql) e1
+                ON c.port_a_id = e1.endpoint_id
+               AND (
+                   c.port_a_type = e1.endpoint_type
+                   OR (c.port_a_type = 'device_ports' AND e1.endpoint_type = 'device')
+                   OR (c.port_a_type = 'module_ports' AND e1.endpoint_type = 'module')
+                   OR (c.port_a_type = 'network_outlet_ports' AND e1.endpoint_type = 'outlet')
+                   OR (c.port_a_type = 'floor_patchpanel_ports' AND e1.endpoint_type = 'floor_patchpanel')
+                   OR (c.port_a_type = 'patchpanel' AND e1.endpoint_type = 'floor_patchpanel')
+               )
+             LEFT JOIN ($endpointUnionSql) e2
+                ON c.port_b_id = e2.endpoint_id
+               AND (
+                   c.port_b_type = e2.endpoint_type
+                   OR (c.port_b_type = 'device_ports' AND e2.endpoint_type = 'device')
+                   OR (c.port_b_type = 'module_ports' AND e2.endpoint_type = 'module')
+                   OR (c.port_b_type = 'network_outlet_ports' AND e2.endpoint_type = 'outlet')
+                   OR (c.port_b_type = 'floor_patchpanel_ports' AND e2.endpoint_type = 'floor_patchpanel')
+                   OR (c.port_b_type = 'patchpanel' AND e2.endpoint_type = 'floor_patchpanel')
+               )
+             WHERE e1.owner_device_id = ? OR e2.owner_device_id = ?",
             "ii",
             [$deviceId, $deviceId]
         )['cnt'] ?? 0);
 
         $selectedDevicePorts = $sql->get(
             "SELECT name, vlan_config
-             FROM device_ports
-             WHERE device_id = ?
-             ORDER BY id
+             FROM (
+                 SELECT dp.name, dp.vlan_config, dp.id AS sort_id
+                 FROM device_ports dp
+                 WHERE dp.device_id = ?
+                 UNION ALL
+                 SELECT CONCAT(m.name, ' / ', mp.name) AS name, NULL AS vlan_config, (1000000 + mp.id) AS sort_id
+                 FROM module_ports mp
+                 JOIN modules m ON m.id = mp.module_id
+                 WHERE m.device_id = ?
+             ) p
+             ORDER BY sort_id
              LIMIT 12",
-            "i",
-            [$deviceId]
+            "ii",
+            [$deviceId, $deviceId]
         );
 
         foreach ($selectedDevicePorts as $port) {
@@ -179,7 +274,7 @@ if ($deviceId > 0) {
             <?php foreach ($connections as $conn): ?>
             <?php
                 $comment = trim($conn['comment'] ?? '');
-                $hasMissingInfo = empty($conn['device_a_name']) || empty($conn['device_b_name'])
+                $hasMissingInfo = empty($conn['endpoint_a_name']) || empty($conn['endpoint_b_name'])
                     || empty($conn['port_a_name']) || empty($conn['port_b_name']);
                 $commentLower = mb_strtolower($comment, 'UTF-8');
                 $warningFromComment = preg_match('/warn|achtung|critical/', $commentLower);
@@ -187,12 +282,12 @@ if ($deviceId > 0) {
             ?>
             <tr>
                 <td>
-                    <strong><?php echo htmlspecialchars($conn['device_a_name'] ?? 'N/A'); ?></strong><br>
+                    <strong><?php echo htmlspecialchars($conn['endpoint_a_name'] ?? 'N/A'); ?></strong><br>
                     <small><?php echo htmlspecialchars($conn['port_a_name'] ?? '—'); ?></small>
                 </td>
 
                 <td>
-                    <strong><?php echo htmlspecialchars($conn['device_b_name'] ?? 'N/A'); ?></strong><br>
+                    <strong><?php echo htmlspecialchars($conn['endpoint_b_name'] ?? 'N/A'); ?></strong><br>
                     <small><?php echo htmlspecialchars($conn['port_b_name'] ?? '—'); ?></small>
                 </td>
 
diff --git a/app/modules/connections/save.php b/app/modules/connections/save.php
index dbad99f..96068d7 100644
--- a/app/modules/connections/save.php
+++ b/app/modules/connections/save.php
@@ -23,6 +23,25 @@ $portBId = (int)($_POST['port_b_id'] ?? 0);
 $vlanConfig = $_POST['vlan_config'] ?? '';
 $comment = trim($_POST['comment'] ?? '');
 
+$normalizePortType = static function (string $value): string {
+    $map = [
+        'device' => 'device',
+        'device_ports' => 'device',
+        'module' => 'module',
+        'module_ports' => 'module',
+        'outlet' => 'outlet',
+        'network_outlet_ports' => 'outlet',
+        'patchpanel' => 'patchpanel',
+        'floor_patchpanel' => 'patchpanel',
+        'floor_patchpanel_ports' => 'patchpanel',
+    ];
+    $key = strtolower(trim($value));
+    return $map[$key] ?? $key;
+};
+
+$portAType = $normalizePortType((string)$portAType);
+$portBType = $normalizePortType((string)$portBType);
+
 // =========================
 // Validierung (einfach)
 // =========================