diff --git a/tools/chatgui-android/app/src/main/java/com/utun/chat/ui/screens/SettingsScreen.kt b/tools/chatgui-android/app/src/main/java/com/utun/chat/ui/screens/SettingsScreen.kt
index cb6f3e530..0453bc9d0 100644
--- a/tools/chatgui-android/app/src/main/java/com/utun/chat/ui/screens/SettingsScreen.kt
+++ b/tools/chatgui-android/app/src/main/java/com/utun/chat/ui/screens/SettingsScreen.kt
@@ -44,6 +44,7 @@ import com.utun.chat.data.RadioAudioEngine
 import com.utun.chat.data.RadioAutoSettings
 import com.utun.chat.data.ConfigProvider
 import com.utun.chat.data.UdpLogSettings
+import com.utun.chat.data.MonitoringSettings
 import com.utun.chat.data.CallVideoBitrateRange
 import com.utun.chat.data.MicrophonePermission
 import com.utun.chat.data.LogManager
@@ -320,6 +321,8 @@ private fun DeveloperSettingsTab(vm: ChatViewModel, onDirty: (Boolean) -> Unit,
     val scope = rememberCoroutineScope()
 
     var controlPort by remember { mutableStateOf("9999") }
+    var monitoringEnabled by remember { mutableStateOf(false) }
+    var monitoringLoaded by remember { mutableStateOf(false) }
     var controlBindIp by remember { mutableStateOf("127.0.0.1") }
     var ctrlBindLabel by remember { mutableStateOf("lo (127.0.0.1)") }
     var debugLevel by remember { mutableStateOf("info") }
@@ -369,12 +372,21 @@ private fun DeveloperSettingsTab(vm: ChatViewModel, onDirty: (Boolean) -> Unit,
         }
     }
 
+    fun saveMonitoring() {
+        val settings = MonitoringSettings(monitoringEnabled, controlBindIp, controlPort.toIntOrNull() ?: 0)
+        if (settings.enabled && !settings.valid) return // Незавершённый ввод подсвечивается; последний верный endpoint сохранён.
+        onDirty(true)
+        val request = provider.saveMonitoringSettings(settings)
+        provider.changes.submit("monitoring") { request.await() }
+    }
+
     LaunchedEffect(Unit) {
         try {
-            controlPort = provider.getInt("control.port").toString()
-            controlBindIp = provider.getString("control.bind_ip") ?: "127.0.0.1"
+            val monitoring = provider.getMonitoringSettings()
+            monitoringEnabled = monitoring.enabled; controlPort = monitoring.port.toString(); controlBindIp = monitoring.ip
+            monitoringLoaded = true
             val allIface = listOf("lo" to "127.0.0.1") + withContext(Dispatchers.IO) { provider.getAvailableInterfaces() }
-            ctrlBindLabel = allIface.firstOrNull { it.second == controlBindIp }?.let { "${it.first} (${it.second})" } ?: "lo (127.0.0.1)"
+            ctrlBindLabel = allIface.firstOrNull { it.second == controlBindIp }?.let { "${it.first} (${it.second})" } ?: controlBindIp
             debugLevel = provider.getString("debug.console_level") ?: "info"
             logFile = provider.getString("debug.log_file") ?: "utun.log"
             val udpLog = try { provider.getUdpLogSettings() }
@@ -454,7 +466,7 @@ private fun DeveloperSettingsTab(vm: ChatViewModel, onDirty: (Boolean) -> Unit,
     }
 
     var ctrlExpanded by remember { mutableStateOf(false) }
-    val ctrlIfaces = listOf("lo" to "127.0.0.1") + availableIfaces
+    val ctrlIfaces = (listOf("lo" to "127.0.0.1") + availableIfaces.filter { !it.second.contains(':') }).distinct()
     val listState = rememberLazyListState()
     val openedAt = remember { android.os.SystemClock.uptimeMillis() }
     LaunchedEffect(Unit) {
@@ -476,8 +488,24 @@ private fun DeveloperSettingsTab(vm: ChatViewModel, onDirty: (Boolean) -> Unit,
                 color = MaterialTheme.colorScheme.onSurfaceVariant)
         }
 
-        /* Control interface */
-        item(key = "control") {
+        item(key = "monitoring-enabled") {
+            Row(Modifier.fillMaxWidth().toggleable(value = monitoringEnabled, enabled = monitoringLoaded,
+                role = Role.Checkbox, onValueChange = { enabled ->
+                    monitoringEnabled = enabled
+                    if (!enabled) {
+                        controlBindIp = "127.0.0.1"; controlPort = "9999"; ctrlBindLabel = "lo (127.0.0.1)"; ctrlExpanded = false
+                    }
+                    saveMonitoring()
+                }), verticalAlignment = Alignment.CenterVertically) {
+                Checkbox(checked = monitoringEnabled, onCheckedChange = null, enabled = monitoringLoaded)
+                Column {
+                    Text(stringResource(R.string.monitoring_enabled))
+                    Text(stringResource(R.string.monitoring_description), style = MaterialTheme.typography.bodySmall,
+                        color = MaterialTheme.colorScheme.onSurfaceVariant)
+                }
+            }
+        }
+        if (monitoringEnabled) item(key = "control") {
             Row(verticalAlignment = Alignment.CenterVertically) {
                 ExposedDropdownMenuBox(expanded = ctrlExpanded, onExpandedChange = { ctrlExpanded = it }, modifier = Modifier.weight(1f)) {
                     OutlinedTextField(ctrlBindLabel, {}, readOnly = true, singleLine = true,
@@ -487,15 +515,15 @@ private fun DeveloperSettingsTab(vm: ChatViewModel, onDirty: (Boolean) -> Unit,
                     ExposedDropdownMenu(ctrlExpanded, onDismissRequest = { ctrlExpanded = false }) {
                         ctrlIfaces.forEach { (n, ip) ->
                             DropdownMenuItem(text = { Text("$n ($ip)") }, onClick = {
-                                controlBindIp = ip; ctrlBindLabel = "$n ($ip)"; onDirty(true)
-                                provider.changes.submit("control address") { provider.setValue("control.bind_ip", ip) }; ctrlExpanded = false
+                                controlBindIp = ip; ctrlBindLabel = "$n ($ip)"; saveMonitoring(); ctrlExpanded = false
                             })
                         }
                     }
                 }
                 Spacer(Modifier.width(8.dp))
-                OutlinedTextField(controlPort, { v -> onDirty(true); controlPort = v; provider.changes.submit("control port") { provider.setValue("control.port", v) } },
+                OutlinedTextField(controlPort, { v -> controlPort = v; saveMonitoring() },
                     label = { Text(stringResource(R.string.port)) }, modifier = Modifier.width(80.dp).heightIn(min = 40.dp),
+                    isError = (controlPort.toIntOrNull() ?: 0) !in 1..65535,
                     keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Number), singleLine = true)
             }
         }
diff --git a/tools/chatgui-android/app/src/main/res/values-ru/strings.xml b/tools/chatgui-android/app/src/main/res/values-ru/strings.xml
index d6ff25f6d..ca0dc614a 100644
--- a/tools/chatgui-android/app/src/main/res/values-ru/strings.xml
+++ b/tools/chatgui-android/app/src/main/res/values-ru/strings.xml
@@ -277,6 +277,8 @@
     <string name="developer_settings_warning">Не меняйте настройки, если не уверены в своих действиях</string>
     <string name="node_name">"Имя узла"</string>
     <string name="control_bind_ip">IP мониторинга</string>
+    <string name="monitoring_enabled">Включить мониторинг</string>
+    <string name="monitoring_description">Доступ по TCP на выбранных IP и порту. Изменения применяются при выходе из настроек. Выключение удаляет адрес и порт.</string>
     <string name="port">"Порт"</string>
     <string name="keys">"Ключи"</string>
     <string name="public_key">"Публичный ключ"</string>
diff --git a/tools/chatgui-android/app/src/main/res/values/strings.xml b/tools/chatgui-android/app/src/main/res/values/strings.xml
index e76d9dcd7..2547dfd0a 100644
--- a/tools/chatgui-android/app/src/main/res/values/strings.xml
+++ b/tools/chatgui-android/app/src/main/res/values/strings.xml
@@ -278,6 +278,8 @@
     <string name="developer_settings_warning">Do not change these settings unless you know what you are doing</string>
     <string name="node_name">"Node name"</string>
     <string name="control_bind_ip">Monitoring IP</string>
+    <string name="monitoring_enabled">Enable monitoring</string>
+    <string name="monitoring_description">TCP access on the selected IP and port. Changes apply when leaving settings. Disabling clears the address and port.</string>
     <string name="port">"Port"</string>
     <string name="keys">"Keys"</string>
     <string name="public_key">"Public key"</string>