I helped a guy in the states set up an apache2 server on his WinXP machine at home. It worked fine until he joined that computer to another via a hub creating a network.
The internet connection goes into the machine that has the running apache server, he can connect via localhost to it. But we can't get to it from outside.

I got him to do a port scan using the symantec website hacker security check and all his ports are on stealth, funny because he has no firewall running on the machine he uses for the server.

Questions:
1. Does he need to set something in the httpd.conf file to say to apache to listen on the actual internet connection (static) IP?
2. Could the winXP firewall running on second PC act as firewall for whole network? (I know it sounds daft but...you never know)
3. Does anyone have a clue how to sort this?

Thanks in advance for your help,
Any answers or URL's to tutorials/answers appreciated.

OK. I am no complete expert but I'll give it a whirl.

Questions - is it a hub or a router? If it is a router is port 80 open?

hmm..XP box can't be acting as a firewall if it has it's own separate connection to the net via hub/router i believe.

Do you have a static or dynamic IP address? If you have a dynamic IP, you should have a DNS redirecting service of some sort.

Answer these questions to the best of your knowledge!

Hub - not a router. I know about setting routers for port 80.

Static IP, already bound to DNS using dyndns.org

Academic answers as the problem is now solved. The wonderful OS XP had no firewall setup for the actual net connection BUT did have for the LAN connection. That was blocking us!

Had us stumped for a while!