How to specify which nic web traffic routes through?

[Jody Cleveland <Cleveland winnefox org>]

Hello,

I've got a server running redhat 4.0 AS. This server has two nics. One
has an internal IP address, and the other has an external IP address.

For some reason, all web traffic is being routed through the internal IP
address.

Is there a way to force routing of all www traffic to go through the nic
with the external IP address?

- jody