I've setup a ISA2006 server, which has VPN clients connecting succesfully and been assigned IPs by a DHCP server.
They receive the correct IP address, and correct DNS servers, however their default gateway is always set to their own IP, and not the gateway configured on the DHCP server.
As a result these machines are not able to connect to other vlans.
If a machine obtains an IP address off the DHCP server directly then they receive all the correct IP information, so I assume its something the ISA server is doing.
I've had a read around but cant seem to find anything that might point me in the right direction.