Can't access resources using VPN on Mac OS X

I am using Cisco's vpn client to connect to my work. It uses IPsec, UDP.

Although I can connect to the VPN server at work, I can't access any other resources.

I noticed that routing tables are not updated. I can continue to use internet and I think traffic is not being routed through the VPN connection at all. How can I fix it?

I tried adding a default route:

route add default ip.vpn.at.office

(ip.vpn.at.office is the static address of the work place vpn server) Doing this, I only lose my internet connection but do not get access to work place resources. Please help!!

 

Is it a problem if my home computer addresses are 192.168.1.* and work place addresses are the same too?