I have successfully been able to get a VPN working using the MUVPN client with IPSec. Now there is a new problem, our graphics people use Mac and our developers use Linux. Watchguard's IPsec client is only for Windows. I have tried IPSecuritas but I can't get it to connect. I have also tried VPN Tracker (the demo) and I was able to VPN with the Mac. The problem is that each license is very expensive and this still doesn't provide a Linux solution.