helo evr, I want to design isa server wih 3 NIC Internet Intranet DMZ It is good idea place in to DMZ (SMTP Relay server, primary DNS, web server and one database server) I have two internet subnet. x.x.10.0/30 and x.x.17.68/30 I have used only one internet IP with NAT so far Can I find somewhere practice example how can I set up tri-home ISA server (Packet filters, server publishing rules etc.) THX Zdenek