I just setup a WRT54G v4 and want to use the Access Restrictions Tab to block some TCP/UDP ports to prevent their use (for the game Tribes) as a form of parental control. I set the IP range to cover all PCs, I left Allow selected so internet research can be done. (When I can get this working, I will use MAC addresses) Under Blocked Services, I select Add/Edit Services. I select UDP or TCP as Protocol, then enter the port number range to be blocked, and click the Add button with the service name left blank. Then I get an error box stating "The Service Name have exist!" with DNS as the default Service name. Using any other service name changes the ports. How can I disable certain TCP or UDP ports? As a workaround, which I hope works temporarily, I used the port forwarding page to forward traffic on these ports to a different machine. Both these machines use static IP addresses. Help is GREATLY appreciated.