I have two NICs in windows 2003, NIC 1 is in the DMZ of a dlink router on a dsl modem through ISP-A. NIC 2 is directly connected to a dsl modem through ISP-B. I can set the metric and direct traffic from one NIC to another. However what I would really like to do is set all WEB traffic (port 80) to NIC1 with ISP-A and all ftp traffic (port 21) to NIC2 with ISP-B. Much help in advance with this issue! Thank you!

JoeLarson

You should have DHCP setup on the server and not your DLINK router. Set the Default Gateway as your server IP.

You should setup routing and remote access on your server and route 192.168.0.0 255.255.0.0 192.168.1.1 (DLink Default Gateway).

(Assuming it's in a 192.168.0.0 subnet)

If you're only using ISPB for external FTP access, then you won't need to worry about anything else.

Or are you talking about using ISPB for your own FTP traffic to/from external sites?

I will be needing to establish outside network traffic on both NICs. I have been doing a lot of testing and have seen that when I set the metric low on either NIC that I am unable to connect to the other NIC's IP address from an external ip. I am not sure if I just do not have something setup correctly but shouldn't I be able to VNC to either IP address no matter what? Because right now I can only connect to the one with the lower metric.

JoeLarson

If you set the routing metric lower, that's the one that will be used by default. Usually if the metric on a route increases, that route will be slated as "unreachable". Metrics in routing is a method of load balancing. If the metric goes higher, routing will be denied through that link.

In gist, you told your server to only communicate out of the NIC with lower metric and there for the other one stops communicating out.

Here's an article that can explain it in better detail.

http://articles.techrepublic.com.com/5100-6350-5033675.html