diff --git a/lib/proxyManager.js b/lib/proxyManager.js
index 18c6937..7ddeacb 100644
--- a/lib/proxyManager.js
+++ b/lib/proxyManager.js
@@ -76,11 +76,11 @@ unixLikeSysProxyManager.disableGlobalProxy = function() {
 	var result = execSync(
 
 		// disable http proxy
-		'networksetup -setwebproxystate ${networkType} off; '
+		'sudo networksetup -setwebproxystate ${networkType} off; '
 			.replace(/\$\{networkType\}/g, networkType) +
 
 		// disable https proxy
-		'networksetup -setsecurewebproxystate ${networkType} off'
+		'sudo networksetup -setsecurewebproxystate ${networkType} off'
 			.replace(/\$\{networkType\}/g, networkType));
 
 	return result;
diff --git a/proxy.js b/proxy.js
index 1634625..89896e5 100644
--- a/proxy.js
+++ b/proxy.js
@@ -165,10 +165,16 @@ function proxyServer(option){
                     var result = require('./lib/proxyManager').enableGlobalProxy(ip.address(), proxyPort);
 
                     if (result.status) {
-                        console.log(color.red(result.stdout));
+                        callback(result.stdout);
+                    } else {
+                        callback(null);
                     }
+
+                } else {
+                    callback(null);
                 }
 
+
             },
 
             //server status manager
@@ -185,6 +191,11 @@ function proxyServer(option){
                     process.exit();
                 });
 
+                //exit cause ctrl+c
+                process.on("SIGINT", function() {
+                    process.exit();
+                });
+
                 process.on("uncaughtException",function(err){
                     logUtil.printLog('Caught exception: ' + (err.stack || err), logUtil.T_ERR);
                     process.exit();