I was having this terrible problem with connecting to the office router via PPTP. It would say connected but I couldn’t ping the office router or any office computers.
Thanks to http://en.kioskea.net/forum/affich-67204-vpn-connects-but-no-remote-lan-access
I did, to quote one of the commenters:
I had a similar issue… What I had to do was tell the connection to not use the remote gateway to connect through internet. On the XP machine (works on Vista and 7 also) go to the properties of the VPN connection. Click on the Networking tab and double click Internet Protocol Version 4 (TCP/IPv4). Click Advanced and uncheck the box for “Use default gateway on remote network.” This will route all of your local traffic through whatever network you’re locally connected to, and any remote traffic through the VPN connection. This also assumes that you’re not trying to route your internet traffic through the VPN. If you leave this option set, then you will not be able to access any local network resources without manually specifiying routes to get to them. This is the default design of VPN :D. I know this post is old, but I figured I’d put in what I discovered it to be, maybe it can help somebody down the road.
Yeah!!! Through the hoop!
Now if I could just figure out why the Cisco QuickVPN client won’t connect I’d be all cool.