Linksys DMZ problem with SOHO3 Router

Archived from groups: comp.dcom.vpn (More info?)

I am trying to install a Linksys WRT54G Ver 2 router between my DSL
line and a SonicWall SOHO3 router so that my office LAN is protected by
the SOHO3 firewall from wireless guests accessing the internet.

The SOHO3 is configured for a VPN connection to a remote location. I
have configured the Linksys router DMZ to forward all incoming traffic
to the SOHO3 router.

With the Linksys router installed, the SOHO3 VPN connection does not
work.

Does anyone have any ideas on what might be the problem?