Knowledge Base Article No. 1783
Article Name
How to configure Zone Alarm to work with VNC

Products
All ZoneAlarm Firewall Versions

Operating System
Windows

Solution
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In order for VNC and ZoneAlarm to work together, follow the steps below.

1. On the server machine, do one of the following:

- If you know the IP address or subnet of the viewer (client) you will be using for client access, and it will always be the same, add that IP or subnet to the Trusted Zone.

- If you do not know the IP address of the viewer, or it will change, then give the program access permission and server permission for the Trusted and Internet Zones.

2. On the viewer (client) machine, run VNCviewer to connect to the server machine. Do not run in 'listen mode'.

3. On the viewer (client) machine, do one of the following:

- If you know the IP or subnet of the Server, and it will always be the same, add that address or subnet to the Trusted Zone. This is the preferred option.

- If you do not know the IP address of the Server, or it will change, then give the program access permission and server permission for both the Trusted and Internet Zone.

4. When prompted by VNCviewer on the viewer machine, enter the name or IP address of the server machine followed by the password when prompted. You should be able to connect.

Caution: If you enable VNC access by giving it server permission and access permission, be sure to set and use your VNC password in order to maintain security. We recommend adding the server and viewer IP addresses to the Trusted Zone, rather than giving the application Internet Zone permission, if possible.

 





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