diff --git a/PortProxyGUI/NewProxy.Designer.cs b/PortProxyGUI/NewProxy.Designer.cs
index b550320..a567fb2 100644
--- a/PortProxyGUI/NewProxy.Designer.cs
+++ b/PortProxyGUI/NewProxy.Designer.cs
@@ -53,12 +53,11 @@
             // 
             // textBox_listenOn
             // 
-            this.textBox_listenOn.Enabled = false;
             this.textBox_listenOn.Location = new System.Drawing.Point(92, 12);
             this.textBox_listenOn.Margin = new System.Windows.Forms.Padding(4, 3, 4, 3);
             this.textBox_listenOn.Name = "textBox_listenOn";
             this.textBox_listenOn.Size = new System.Drawing.Size(120, 23);
-            this.textBox_listenOn.TabIndex = 1;
+            this.textBox_listenOn.TabIndex = 0;
             this.textBox_listenOn.Text = "*";
             this.textBox_listenOn.TextAlign = System.Windows.Forms.HorizontalAlignment.Center;
             // 
diff --git a/PortProxyGUI/NewProxy.cs b/PortProxyGUI/NewProxy.cs
index 5433fe0..e0d55ea 100644
--- a/PortProxyGUI/NewProxy.cs
+++ b/PortProxyGUI/NewProxy.cs
@@ -22,15 +22,16 @@ namespace PortProxyGUI
             InitializeComponent();
         }
 
-        private void AddPortProxy(string type, string listenPort, string connectTo, string connectPort)
+        private void AddPortProxy(string type, string listenOn, string listenPort, string connectTo, string connectPort)
         {
-            var output = CmdRunner.Execute($"netsh interface portproxy add {type} listenport={listenPort} connectaddress={connectTo} connectport={connectPort}");
+            var output = CmdRunner.Execute($"netsh interface portproxy add {type} listenaddress={listenOn} listenport={listenPort} connectaddress={connectTo} connectport={connectPort}");
             Invoke((Action)(() => PortProxyGUI.RefreshProxyList()));
         }
 
         private void button1_Click(object sender, EventArgs e)
         {
             var type = comboBox_type.Text;
+            var listenOn = textBox_listenOn.Text;
             var connectTo = textBox_connectTo.Text;
             var listenPort = textBox_listenPort.Text;
             var connectPort = textBox_connectPort.Text;
@@ -41,26 +42,6 @@ namespace PortProxyGUI
                 return;
             }
 
-            var ipv4 = connectTo.IsMatch(new Regex(@"^(?:\d{1,2}|1\d{2}|2[0-4]\d|25[0-5])(?:\.(?:\d{1,2}|1\d{2}|2[0-4]\d|25[0-5])){3}$"));
-            var ipv6 = connectTo.IsMatch(new Regex(@"^[\dABCDEF]{2}(?::(?:[\dABCDEF]{2})){5}$"));
-
-            if (!ipv4 && !ipv6)
-            {
-                MessageBox.Show($"The address which is connect to is neither IPv4 nor IPv6.", "Fail", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
-                return;
-            }
-
-            if (ipv4 && !type.EndsWith("v4"))
-            {
-                MessageBox.Show($"The type must be v4tov4 or v6tov4.", "Fail", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
-                return;
-            }
-            else if (ipv6 && !type.EndsWith("v6"))
-            {
-                MessageBox.Show($"The type must be v4tov6 or v6tov6.", "Fail", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
-                return;
-            }
-
             if (!int.TryParse(listenPort, out var _listenPort) || _listenPort < 0 || _listenPort > 65535)
             {
                 MessageBox.Show($"The listen port is invalid.", "Fail", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
@@ -73,7 +54,43 @@ namespace PortProxyGUI
                 return;
             }
 
-            AddPortProxy(type, listenPort, connectTo, connectPort);
+            var listenOn_any = listenOn == "*";
+            var listenOn_ipv4 = listenOn.IsMatch(new Regex(@"^(?:\d{1,2}|1\d{2}|2[0-4]\d|25[0-5])(?:\.(?:\d{1,2}|1\d{2}|2[0-4]\d|25[0-5])){3}$"));
+            var listenOn_ipv6 = listenOn.IsMatch(new Regex(@"^[\dABCDEF]{2}(?::(?:[\dABCDEF]{2})){5}$"));
+            var connectTo_ipv4 = connectTo.IsMatch(new Regex(@"^(?:\d{1,2}|1\d{2}|2[0-4]\d|25[0-5])(?:\.(?:\d{1,2}|1\d{2}|2[0-4]\d|25[0-5])){3}$"));
+            var connectTo_ipv6 = connectTo.IsMatch(new Regex(@"^[\dABCDEF]{2}(?::(?:[\dABCDEF]{2})){5}$"));
+
+            if (!listenOn_any && !listenOn_ipv4 && !listenOn_ipv6)
+            {
+                MessageBox.Show($"The address which is connect to is neither IPv4 nor IPv6.", "Fail", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
+                return;
+            }
+
+            if (!connectTo_ipv4 && !connectTo_ipv6)
+            {
+                MessageBox.Show($"The address which is connect to is neither IPv4 nor IPv6.", "Fail", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
+                return;
+            }
+
+            if (listenOn_any && connectTo_ipv4 && !type.EndsWith("v4"))
+            {
+                MessageBox.Show($"The type must be v4tov4 or v6tov4.", "Fail", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
+                return;
+            }
+            else if (listenOn_any && connectTo_ipv6 && !type.EndsWith("v6"))
+            {
+                MessageBox.Show($"The type must be v4tov6 or v6tov6.", "Fail", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
+                return;
+            }
+            else
+            {
+                if (listenOn_ipv4 && connectTo_ipv4) type = comboBox_type.Text = "v4tov4";
+                else if (listenOn_ipv4 && connectTo_ipv6) type = comboBox_type.Text = "v4tov6";
+                else if (listenOn_ipv6 && connectTo_ipv4) type = comboBox_type.Text = "v6tov4";
+                else if (listenOn_ipv6 && connectTo_ipv6) type = comboBox_type.Text = "v6tov6";
+            }
+
+            AddPortProxy(type, listenOn, listenPort, connectTo, connectPort);
         }
 
         private void NewProxy_Load(object sender, EventArgs e)