diff --git a/.gitignore b/.gitignore
index 02c17fd..7efc8a8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -36,6 +36,9 @@ src-tauri/target/
 .env.local
 .env.*.local
 
+# Config
+config.json
+
 # OS
 .DS_Store
 Thumbs.db
diff --git a/server/index.js b/server/index.js
index 3ce16d3..b22668a 100644
--- a/server/index.js
+++ b/server/index.js
@@ -107,12 +107,10 @@ io.on('connection', (socket) => {
 });
 
 const PORT = process.env.PORT || 3000;
-const HOST = process.env.HOST || '0.0.0.0';
+const HOST = process.env.HOST || '127.0.0.1';
 
 httpServer.listen(PORT, HOST, () => {
   console.log(`P2P Transfer Server running on http://${HOST}:${PORT}`);
-  console.log(`Local access: http://localhost:${PORT}`);
-  console.log(`LAN access: http://${getLocalIP()}:${PORT}`);
 });
 
 function getLocalIP() {
diff --git a/src/composables/useSocket.js b/src/composables/useSocket.js
index c3d625a..d1b0388 100644
--- a/src/composables/useSocket.js
+++ b/src/composables/useSocket.js
@@ -1,11 +1,16 @@
 import { ref, onMounted, onUnmounted } from 'vue';
 import { io } from 'socket.io-client';
 import { generateUserId } from '../utils';
+import config from '../../config.json';
 
 function isTauri() {
   return window.__TAURI__ !== undefined;
 }
 
+function getDefaultServerUrl() {
+  return config.defaultServerUrl || 'http://localhost:3000';
+}
+
 export function useSocket() {
   const socket = ref(null);
   const userId = ref('');
@@ -13,7 +18,7 @@ export function useSocket() {
   const connected = ref(false);
   const roomUsers = ref([]);
   const roomId = ref('');
-  const serverUrl = ref(localStorage.getItem('p2p-server-url') || 'http://localhost:3000');
+  const serverUrl = ref(localStorage.getItem('p2p-server-url') || getDefaultServerUrl());
 
   onMounted(() => {
     userId.value = generateUserId();