# Windows Configurations - How To's

## How do I deploy an exception for a port for the desktop-sharing system called Virtual Network Computing (VNC)?

### Description

This document provides you with steps required to deploy an exception for a port for VNC. For example, port 5900.

### Steps

To deploy an exception for a VNC port, follow the steps given below:

1. Click the **Configurations** tab  
2. Click **Configuration**  
3. In the **Computer Configurations** section, select **Firewall**  
4. Enter a name and description for the configuration  
5. In the **Firewall Action** section, select **Don't Modify**  
6. In the **Firewall Configuration** section, click **Customize**  
7. In the Customize Firewall Ports window, in the **Add to Selected Ports** section, enter the following information:  
   - Port Name: VNC Port  
   - Port: 5900  
   - Protocol: TCP  
8. Click **Add**  
9. Close the **Customize Firewall Ports** window  
10. In the **Firewall Configuration** section, enter the following information:  
    - Port Action: Unblock  
    - Choose Port: 5900 - VNC - TCP  

    **Note**: This should be in the Number - Name - Protocol format.

11. Choose a target  
12. Configure the execution settings as required  
13. Click **Deploy**

You have deployed an exception for VNC port number 5900. The settings will reflect in the client computers during the agent's 90-minute refresh cycle, during startup or during logon—whichever takes place earlier.