Say I have two subdomains, a.domain.com, and b.domain.com. I want my 831 to examine the header, sort-of like apache's virtualhosts do, and based on the IP, send the request to one of my servers.
So - say I have a server on 10.10.10.1, and one on 10.10.10.2. I want anything accessed by a.domain.com to go to 10.10.10.1, and anything from b.domain.com to go to 10.10.10.2.
I only have ONE external IP. I think this is possible, but not sure how to do it, or even what to look up.