diff --git a/lib/client/operation.js b/lib/client/operation.js
index 9c4fa245..db97b14a 100644
--- a/lib/client/operation.js
+++ b/lib/client/operation.js
@@ -59,6 +59,21 @@
             ]);
         }
         
+        function authCheck(spawn) {
+            DOM.Files.get('config', function(error, config) {
+                if (error)
+                    return Dialog.alert(TITLE, error);
+                
+                if (config.auth) {
+                    spawn.emit('auth', config.username, config.password);
+                    
+                    spawn.on('auth', function() {
+                        Dialog.alert(TITLE, 'Wrong credentials!');
+                    });
+                }
+            });
+        }
+        
         function create(prefix, callback) {
             exec.series([
                 function(fn) {
@@ -66,6 +81,7 @@
                         fn();
                         
                         copier.on('connect', function() {
+                            authCheck(copier);
                             copyFn = function(data, callback) {
                                 setListeners(copier, callback);
                                 copier.copy(data.from, data.to, data.names);
@@ -82,6 +98,7 @@
                     remedy(prefix + '/remedy', prefix, function(remover) {
                         fn();
                         remover.on('connect', function() {
+                            authCheck(remover);
                             deleteFn = function(from, files, callback) {
                                 from = from.replace(/\?.*/, '');
                                 
@@ -100,6 +117,7 @@
                     ishtar(prefix + '/ishtar', prefix, function(packer) {
                         fn();
                         packer.on('connect', function() {
+                            authCheck(packer);
                             packFn = function(data, callback) {
                                 setListeners(packer, callback);