I'm running an Apache server with PHP and MySQL. I can view the server at http://localhost/ but others have trouble remotely viewing it. If I type in my IP address into a browser, it gives me the "Page cannot be displayed..." error. My ISP blocks port 80, so I tried port 8088 and 81, but they don't seem to work. I'm probably overlooking something fundamental, but I'm no expert at setting up servers. Thanks!

Are you using a router?

Sounds like a FireWall could be a problem. Also, check that you have port forwarding configured on your router for you machine if you are using one.

Sorry for the lack of information. I'm using a router, and I've configured the port forwarding to direct ports 80, 81, 8080, 8088, and 4001 to my computer. None of them seem to work. Firewall shouldn't be a problem either; I disabled it. I just reformatted, so I haven't configured any antivirus / antispyware, so there shouldn't be any programs blocking remote access. Thanks.

Some information that I've found after experimenting a bit more: When I edit the httpd.conf to: Listen 80 I can view it on my machine fine, but my ISP blocks port 80 from remote access. I tried setting it to ports 81, 8088 (8080 is blocked, too), 4001, and 7777, but none of them worked, even though all of them were forwarded from my router. Is there a specific port that I should use as a substitute for port 80? Is there an additional step I have to take when configuring Apache to use a different port other than editing the httpd.conf file to listen to a different port? Thanks again.

Update: I changed the port to 8000, and everything seems to be working now. Thanks for the help.