This is going to be very general question, but a friend of mine is trying to connect into a remote client's network. They told him to just use the built in windows VPN client...and gave him a domain name to connect to and a username and password. He has a Symantec Gateway VPN firewall on his small office network, and would like to simply connect his whole network...via the gateway box...to this client. But the Symantec has all sorts of VPN settings and options. Without getting into to much detail, is it even possible for him to get his Symantec Gateway box to connect to some windows vpn?
On a side note, the reason he want's to connect his whole network is because he needs a Linux machine to be able to see the remote network. Maybe instead of trying to connect with the Symantec appliance, maybe there is some sort of Linux software that emulates the Windows VPN client?