Blocking and unblocking ports

Use controls in the Firewall panel to customize your security settings by blocking or unblocking specific ports.

Blocking or unblocking ports in the firewall

To block or unblock ports in your ZoneAlarm Pro firewall:

1. Go to the Main tab in the Firewall panel.
2. Click the Custom button for the Zone in which you want to adjust port settings.
3. Allow or block ports by selecting or clearing the check boxes.

Note In the Internet Zone tab and the Trusted Zone tab, scroll to the bottom of the list to access high security settings. For detailed information, see the related topics Internet Zones tab and Trusted Zones tab.

Limiting the ports a program can use

By default, programs to which you give access permission or server permission can use all ports. To restrict the ports a particular program can use:

1. Go to the Programs tab in the Program Control panel.
2. Click the program name or icon to select it.
3. Click the Options button. The Ports tab opens.
4. In the Ports tab, select one of the following options:
• Allow access for ONLY the ports and protocols checked below.
• Allow access for any port EXCEPT for those checked below.
5. Use the Add and Remove buttons to specify the ports to block or allow.