Product Support

F-Secure Internet Security 2009 - Back to FAQ list

Internet Shield Firewall

Q12. I used to play network games or use peer-to-peer software on the Internet before I installed F-Secure Internet Security. Now these applications do not work anymore. What can I do?

If this happens, you may need to open a port through the firewall for the network game or peer-to-peer software. Also check that the security level of Internet Shield is Normal. This level usually allows you to use these types of programs without any problems. To open the product, double-click the product icon at the bottom right corner of your screen.

You may not be able to add your own rules to all security levels. Select the security level to which you want to add the new rule before you open the port.

When you open a port through the firewall, you create a new firewall rule and two new services.

1. Click the Internet Shield tab.
2. Click Open a port.
3. In the Name field, enter a name for the new firewall rule.
4. In the Port number field, define the responder port for the rule. The responder port is usually mentioned in the product documentation.
5. Click OK.

The new rule is added to the firewall rules list and two new services are created on the firewall services list for both the TCP and UDP protocols with the specified port number.