No, but GRE is what passes through your nat ant routers. All equipment does not support the handeling of GRE. Cisco and linux does. Do you have a particular problem or do you just want to know how it fits together before you start? There is a particular port that is accessed on the server end. This is with pptp. If it is just nat and no firewall, it aught to work. hth Willem -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list