Straight to the point: I can connect into my VPN server, but I have no Internet access after that. I've seen numerous posts on Google saying "Oh, you're stupid, don't use the default gateway. Just uncheck the box at [such a location] in Windows." Problem is, one of my clients is Ubuntu, and the other is an iPod Touch. Plus, I want my traffic to use the VPN as a gateway as a security measure on open networks. I've become quite frustrated with Google trying to figure this out, so I came to the source. HALP!
EDIT: A recap of my replies in this thread:
I'd like to reiterate that I have no problem connecting to the VPN server, even from a remote network.
My VPN clients get an address from the range I specified in the VPN server. If I change it to give addresses from DHCP, VPN clients cannot connect at all.
The firewall on the VPN server is down. It sits behind a router with only the necessary ports forwarded.
And a side note: The WRT54G v8 is capable of running Micro DD-WRT, which (correct me if I'm wrong) doesn't support running a VPN server on the router itself.