IP FORWARDING

[phaldisa]

Hi All
I have a windows 2000 pro pc that I need to set up as a Gateway to relay information between two networks.
currently I can see from one network to this machine and from the other network to this machine, but pc's from the one network cannot transmit info to the other network.
I have put in static Ip addresses.

Please help!!!!

 

[lifto]

From what you have said, I'm assumming that ther are 2 NIC's on the "gateway" machine. Correct?

If that the case you need to enable "IP Forwarding" on the gateway machine and then set the gateway machine's IP address as the default gateway on the other machines on each respective subnet.

HTH

 

[Accessdabbler]

Where is gateway forwarding set? Do you need third-party gateway software?

 

[phaldisa]

I have 2 nic's on the gateway pc with ip forwarding enabled on the registry, I have also set the pc's ip address as the gateway on the other each respective subnet without any joy.When I do a traceroute it times out at the gateway pc!!

 

[lifto]

First thing, can you ping machines on both subnets from the gateway machine? If you can then try pinging from one subnet to the other from a couple of machines on the subnet to make sure that it's not limited to one machine.

Look at the routing table on the gateway machine and make sure that traffic for a subnet is going out that subnet's NIC. You probably will have to add a couple of routes.

Also what is the default gateway for the gateway machine. If there are not a specific routes for the two subnets, they will try and head for the default gateway.

There is a good info at Microsoft Knowledge Base Article - 230082 that might help to.