Watchguard VPN client through Firewall-1 v4.1

From: John Smith (nospam_at_justpostingroup.com)
Date: 11/13/03 

Date: Thu, 13 Nov 2003 16:54:00 -0000

Quick question to see if this is possible before I go spending lots of time
trying to get it to work

Locally I have a Windows XP client, Watchguards VPN client software
installed and can connect using a dial up account. However if I put I behind
out Firewall-1 v4.1 it does not connect even if I open all ports.

We are using NAT and the VPN/Firewall at the other end also uses NAT is this
going to work at all?

My suspicion is that the double NAT is the problem but I don't know for sure
and don't want to spend too much time on it if it is not possible.

Please post any responses in here.

PS I tried a the Cisco VPN client to a PIX and saw similar problems.

Thanks