Hi All, I've never used more then 2 network cards in a box. Don't know why but have never had a need. Now, with my new setup I'm using 4 NIC's in my back end firewall INTERNAL 10.x.x.x NO GW HAS DNS SETTING EXTERNAL 216.x.x.x HAS THE GW HAS DNS SETTING DMZ 172.x.x.x NO GW HAS DNS SETTING PERIMETER 192.x.x.x NO GW HAS DNS SETTING I have used different IP address for each of the nic's this time. With only one gateway on the external NIC Card. I'm unable to ping anything other then the external. With the way ISA sets up the networks with NAT or routes Is it necessary to have multiple gateways on my NIC's? I just want to make sure that all is setup with net cards First before I really open up this new environment. Where is some good documentation that talks about multihomed machines for windows 2003? Most information I have is for NT4 and W2K. Thank you, Joseph