I have a Linksys WRT54GS and have two machines on my network connecting wirelessly. DHCP is enabled, and is granting IP addresses in the .100-120 range. The one machine is a laptop running Ubuntu 10.04 and it is working via DHCP, IP address .103.
The second machine, OS X 10.4, I set to a static IP in order to allow port forwarding from the router, as per these instructions: http://portforward.com/networking/static-Mac10.4.htm. It's grabbing an IP address outside of the DHCP range; .13.
Since I did so, the Mac can see the local network, and I can access the router config from it, but all traffic outside of my LAN is blocked for that machine. I see no settings indicating any sort of filter or rules that would block web access.
Where did I go wrong?