Two NIC cards with different default gateways?

I have two web servers that are set up EXACTLY the same except for one is
Windows 2000 Server and one is Windows 2003 Server. They both have two NIC
cards in them. One NIC card sits on the DMZ IP space (192.168.2.0) and one
NIC cards sits on the Interal IP space (192.168.1.0). On the Windows 2000
Server machine both NIC cards have default gateways in them (192.168.2.1 and
192.168.1.1 respectively). This server works perfectly.

On the Windows 2003 server, if I try to enter two different default gateways
on the NIC cards, it flashes a big long paragraph of a warning message. I
just ignore it and do it anyway. But now all internal network traffic
(192.168.1.0) stops working properly. If I go to the DMZ NIC and remove the
default gateway and leave it empty, everything goes back to working properly.

The only problem with this is that these servers are web servers and people
trying to access them from the internet are NAT'd through our firewall and
sent to the DMZ interface card on the webserver which in turn doesn't have a
default gateway specified so the data doesn't know how to get back out.

My question? What's different about Windows 2003 Server that causes this
type of setup not to work? Any ideas? Thanks.

You should not setup two default gateways on a multihomed computer. You may keep the DMZ default gateway and remove the LAN NIC gateway.

Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
"Andrew" <(E-Mail Removed)> wrote in message news:1D7EA488-D612-4EF4-96E2-(E-Mail Removed)...
I have two web servers that are set up EXACTLY the same except for one is
Windows 2000 Server and one is Windows 2003 Server. They both have two NIC
cards in them. One NIC card sits on the DMZ IP space (192.168.2.0) and one
NIC cards sits on the Interal IP space (192.168.1.0). On the Windows 2000
Server machine both NIC cards have default gateways in them (192.168.2.1 and
192.168.1.1 respectively). This server works perfectly.

On the Windows 2003 server, if I try to enter two different default gateways
on the NIC cards, it flashes a big long paragraph of a warning message. I
just ignore it and do it anyway. But now all internal network traffic
(192.168.1.0) stops working properly. If I go to the DMZ NIC and remove the
default gateway and leave it empty, everything goes back to working properly.

The only problem with this is that these servers are web servers and people
trying to access them from the internet are NAT'd through our firewall and
sent to the DMZ interface card on the webserver which in turn doesn't have a
default gateway specified so the data doesn't know how to get back out.

My question? What's different about Windows 2003 Server that causes this
type of setup not to work? Any ideas? Thanks.