I am not an expert with networking so please excuse my layman vocabulary.
We have a VPN 3000 Concentrator using IPSec via the Cisco client to connect users from outside the LAN/WAN. It currently routes all traffic through the tunnel and then nothing gets back out to the internet once it goes in. So our users must disconnect from the VPN to get to the internet.
Split-Tunneling seems like the logical answer to me as long as the clients are behind a personal firewall. However, our Network Administrator thinks that there are no cases where split-tunneling should be used and that it is not possible to route internet traffic through the VPN tunnel. I have read enough about this to know neither of those arguments are true.
To me this seems like a gateway or ip routing setting that is missing or incorrect. Where can I find information on configuring our VPN concentrator to allow traffic to get through the tunnel and back out to the internet?