diff --git a/backend/services/mikrotikApplyService.js b/backend/services/mikrotikApplyService.js
index 29cb4aa..da2b281 100644
--- a/backend/services/mikrotikApplyService.js
+++ b/backend/services/mikrotikApplyService.js
@@ -15,7 +15,10 @@ const https = require('https');
  */
 function createRosClient(opts) {
   const { host, port = 80, user, password, secure = false } = opts;
-  const useHttp = port === 80;
+  // Порт может прийти строкой из JSON — приводим к числу
+  const portNumber = Number(port) || 80;
+  // REST API по умолчанию висит на HTTP:80, HTTPS обычно на 443/8443
+  const useHttp = portNumber === 80;
   const protocol = useHttp ? http : https;
 
   const makeRequest = (method, urlPath, body = null) => {
@@ -32,7 +35,7 @@ function createRosClient(opts) {
       if (bodyStr) headers['Content-Length'] = Buffer.byteLength(bodyStr, 'utf8');
       const options = {
         hostname: host,
-        port,
+        port: portNumber,
         path: pathStr,
         method,
         headers,
diff --git a/frontend/src/components/server/ServerModal.jsx b/frontend/src/components/server/ServerModal.jsx
index 6a384a8..f98465a 100644
--- a/frontend/src/components/server/ServerModal.jsx
+++ b/frontend/src/components/server/ServerModal.jsx
@@ -588,9 +588,9 @@ function ServerModal({ show, mode = 'add', server, onSave, onClose, error: exter
                       <input
                         type="number"
                         className="form-control form-control-sm"
-                        value={localServer.mikrotikPort || '8728'}
+                        value={localServer.mikrotikPort || '80'}
                         onChange={(e) => handleFieldChange('mikrotikPort', e.target.value)}
-                        placeholder="8728"
+                        placeholder="80"
                       />
                     </div>
                     <div className="col-md-3">
@@ -627,7 +627,7 @@ function ServerModal({ show, mode = 'add', server, onSave, onClose, error: exter
                           const payload = hasPassword
                             ? {
                                 host: localServer.mikrotikHost || localServer.ip,
-                                port: localServer.mikrotikPort || 8728,
+                                port: localServer.mikrotikPort || 80,
                                 user: localServer.mikrotikUser || 'admin',
                                 password: localServer.mikrotikPassword,
                               }