On Sun, 24 Sep 2000, Raul Miller wrote: > What has to be permitted at a firewall/packet filter, to allow this > to work? [Personally, I'm going to have to configure linux ip chains, > a gauntlet firewall, and a cisco, if I'm going to use this. Either that, > or I'm going to squeeze the tunnel through an ssh tcp tunnel.] You'll need a routable IP for starters, past that you need to let IP protocol 41 pass through your firewall in both directions. Jason