I've bought a Cisco RVS4000 router, and have set up VPN on the box.
The only way to connect to it seems to be through a client called QuickVPN, which Cisco only releases for windows. I've successfully set up the VPN tunnel on my windows partition, but would like to make it work on my Ubuntu partition as well.
I've tried to install the QuickVPN client through WINE, and when I run it, it seems to be connecting. BUT... after a little while, the client says "The remote gateway is not responding. Do you want to wait?". If I click yes, it comes back after a little while, and if I click no, it disconnects.
If I ping any known ip on the other side of the tunnel while connected, I get no answers. I were thinking it might need some more privileges to create an interface or something like that, but I don't have any experience with WINE, and know that you should never run WINE as root or sudo it.
I've also found out that QuickVPN uses some kind of IPSEC, but that it apparently does something non-standard/proprietary, and therefore is not compatible with the IPSEC stack.
I'm all open for suggestions? :)