This article discusses how VPN and Netfilter interace and enumerates the rules that entries in the /etc/shorewall/tunnels file generate. http://shorewall.net/VPNBasics.html -Tom -- Tom Eastep \ Nothing is foolproof to a sufficiently talented fool Shoreline, \ http://shorewall.net Washington USA \ teastep@shorewall.net PGP Public Key \ https://lists.shorewall.net/teastep.pgp.key