Granted, I tend to be a little… extreme… in the oddly setup network scenarios. Still, there are times when I need to make my freaky little combination work with a client’s environment without reconfiguring their network to meet my own needs.

I have a client that has a PPTP-based VPN solution in place. While I prefer a more robust SSL or IPSec VPN– this isn’t about me. That’s what they have, and it works for them. I needed to make my tools work with that situation.

On my end, though, I run a Linux desktop with virtualized (ask me later) instances of client servers or development environments. In this case, I had a Windows XP guest system running, but I needed to be able to access my Linux system as well on their network. So, while Linux’s NetworkManager would happily make a connection to their relatively oldish VPN server device, I couldn’t make another from the XP client at the same time.

What’s more, their VPN server device was having no part of routing my network’s traffic. (Note: I am not specifying the parts involved here because I don’t want to start a ‘you should have done THIS!’ discussion. I’m very much a ‘get it working and move on’ person.)

(continue reading…)