Quade,
When a Windows 2000 box is behind a 4.1.2 server-gateway, the Extranet IPSEC VPN client connects. When the gateway is changed to a SME 5.0 or 5.1 server, Extranet fails to find the host. Using 4.1.2 as straight gateway, no proxy, transproxy or squid (no user accounts on e-smith). E-smith 4.1.2 has static IP on a T1 line. I did nothing to allow the Extranet Client to work from behind the e-smith server, only discovered it works from behind 4.1.2. I already mentioned the rpms I added to the 4.1.2 server.
Good Luck, and if anyone knows how to get IPSEC on port 500 I think to pass a SME 5.0 Server, please post it.
RS