I'm looking to route data through an XP Pro machine with two network cards. A diagram of what I'm try to do can be seen here: http://i26.tinypic.com/10hw1oh.jpg Someone else asked a similar question, but in two years, got no replys: http://www.computing.net/answers/ne... I think I need to make some route table edits. Just not sure which edits to make. Any suggestions would be appreciated. Dave

I've always considered dual homed windows machines a big pain in the butt & not worth the hassle, especially on a home network. However, I'm glad you asked that question because I just learned something from the diagram that you posted. The caption showing the line ipenablerouter=1 is a registry change. I searched it on Google & there are a lot of hits. The registry key is: HKLM\SYSTEM\CurrentControlSet\Services\Parameters\IPEnableRouter=1 (default is IPEnableRouter=0). My guess that the registry change allows the NICs to communicate based on the routing tables you create using the route add command. I would have to actually try it to have a complete understanding of the procedure but it might be enough to get you started. Let me know how far you get. How do you know when a politician is lying? His mouth is moving.

I had already made that regedit, I only included the last part of the key for brevity. The network is a model of one that exists in a plant. That pain you speak of would have me use different hardware could I. My problem is that I don't know half what I should about routing. While waiting to see what others have to suggest I'm madly trying to teach myself to properly read a route table, a skill I wish I'd aquired sooner.

Then the next step is understanding the route command. Looking at it, I see that you need to add routes for each NIC & the -p switch has to be used for windows to remember it after it reboots. So far we have: route -p add destination_IP netmask gateway metric Let's say there are 2 NICs each on a different subnet, one is 192.168.0.2 & the other is 192.168.1.2 The way I understand it, if we were configuring 192.168.0.2 we would use: route -p add 192.168.1.2 255.255.255.0 192.168.0.2 [metric] [if] The metric is the number given to the NIC you are configuring which can be seen in the route print command. [if] is the IP of the same interface. It's only used if you want to be sure that windows is using a particular interface. That's my best guess. Change the command as you see fit & let me know what works. How do you know when a politician is lying? His mouth is moving.

Well I came across your question while looking for an option to my own problem. I came across the following link : http://www.petri.co.il/configuring_... However, I you only want to restrict pc 192.168.254.1 & 10.10.10.12 to only sent emails, you might try (for the mean time) : a. set all the computer in the same network (192.168.50.0) b. use "Local Security Setting" (IPSec - I think) to only allow the pc to access only email server ip address. I hope that can give some help