I Need some help setting up a multihomed system with win2003 Server. I have a duplicate NT4 network set up the same way and it is working with no problems tweeks or changes. First let me give a quick description of my network. Cisco 1605R router with 2 Ethernet Ports. One subnet of IP's that are open to the Internet (204.170.25.x) Not real IP. This is the subnet of IP's customers use to access our WEB/FTP sites. One subnet of non-routable IP's for the internal network (192.168.0.x). The IP Gateway for Cisco ETH1 is 204.170.25.1 The IP Gateway for Cisco ETH0 is 192.168.0.1 One server named 'ns1' running win2003 / DNS / Active directory. There is 1 NIC in this machine with an IP of 192.168.0.228. The NIC is plugged into the internal network on ETH0. One multihmed Server named 'www1' running win2003 There are 2 NICS in this machine. NIC1 = 192.168.0.229, Gateway 192.168.0.1. (My internal network) plugged into the internal network on Cisco ETH0. NIC2 = 204.170.25.61, Gateway 204.170.25.1. (My Class C) Plugged into cisco ETH1. The internet needs to access this NIC to get to my Website. Because I've been having so many problems I started out this time by disabling NIC2 on 'www1' and just getting 'www1' working as part of the domain, and being able to surf the internet. This all works fine and 'www1' automatically adds a host A record to 'ns1' and I can browse the network. I'm now ready to enable NIC2 of 'www1 which is connected to ETH1 of the cisco router. This is where the problems begin. when I set the IP of NIC2 to 204.170.25.61 I get I the warning 'Warning - Multiple default gateways are intended to provide redundancy to a single network(such as an intranet or internet). They will not fumction properly when the gateways are on two separate, disjoint networks(such as one on your intranet and one on the internet). Do you want to save this configuration?' I've read this message is new to win2003 and it also applies to NT and 2000. But If I click Yes and save the settings I can no longer browse the network or surf the Internet. I'm told I need to use the command 'route - p add' to tell each NIC where to look. On the last setup I tried this Removed the gateway IP from NIC1 on 'www1' route -p add 192.168.1.0 mask 255.255.255.0 204.170.25.61 But that disconnected my Internal Network connection so I guess I did something wrong. Also, on my duplicate NT4 setup using the same cisco router and the same 2 subnets I don't have any of these problems. I just set each NIC with an IP and gateway and it works. I have no additional routing set up on the NT system. So I'm woundering why win2003 does not just work like NT4 without me doing anything. But since it does not, any help would be appreciated. Do I need to make the change in my cisco router or on 'www1' and what specific changes do i need to make. This multihomed situation in 2003 has me really confused! thanks for your help.

In case you haven't already figured this out, I'll try to explain. The issue here is "default" gateway, versus gateway. When you have more than one default gateway, it's too arbitrary. Packets could go out either network adapter, depending on what is the "current" default gateway. There can only be one active default gateway at a time. What you need to do is turn off the default gateway on the private segment. Then either plumb the routing table with the network segments that are across the router on the private side (since they don't reach the internet, this is the side you need to adjust). What needs to go in the route table really depends on the environment. Either that, or you can enable a router protocol. RIP and OSPF will allow the multihomed machine to learn about the network segments that would be across the router. Look up settings for ROUTE ADD Of course you could do all of this in the Routing and Remote Access MMC, and it's actually more appropriate to do it there. Really depends on your comfort. Ken