Need to access XP VPN from OS X

I need to access a VPN established in XP from the Mac OS. I'm using the latest Parallels Desktop. Can anyone tell me how to do this?

 

Please answer what Network Evulation type do you use: Shared Networking or Bridged or Host-only? (Please run Parallels Desktop -> click tab "Edit" on the top of Mac screen -> Virtual Machine... -> Network adapter 1 -> Emulation)

 

This is an interesting scenario and one which I was able to play with using my current setup. I run XP under Parallels on my Mac mini. I regularly use a Cisco VPN under XP. I *thought* the solution would be to simply add a static route in OS X which used XP as the gateway (I use bridged networking). Despite much Googling and hair-pulling I didn't get it to work, but I know I'm on the right track. I figured I'd post the details of what I tried in hopes that someone else might be able to build upon it. Here goes:


XP IP details:

IP (via Parallels bridged networking): 192.168.10.6
Subnet mask: 255.255.255.0
Default gateway: 192.168.10.1

IP (from Cisco VPN client): 10.1.2.3 (last 3 octets changed to preserve anonymity)
Subnet mask: 255.0.0.0

The target network is 130.140.0.0 (first 2 octets changed to preserve anonymity) and the following entry exists in the routing table:

130.140.0.0 255.255.0.0 10.1.2.3 10.1.2.3 1


OS X IP details:

IP: 192.168.10.5
Subnet mask: 255.255.255.0
Default gateway: 192.168.10.1

I added what appeared to be the correct route:

sudo route add -net 130.140.0.0/16 192.168.10.6

End result: while I can ping machines on the target network from XP, I cannot ping them from OS X. I also tried adding the same route with netmasks of /8 & /24, but still no luck.

BTW - this post isn't meant to be a Parallels support request. I'm just a networking geek trying to help figure out what looked like an interesting problem.