Check if port 80 is open. Port 80 is blocked. Sometimes your ISP may block port 80. They don't like you running your own webserver. I found a website that checks common ports and also checks to see if Port 80 is open. To check if Port 80 is open visit the following website:- http://www.grc.com/port_80.htm Home - Apache - Ubuntu - MySQL - PHP - Misc Updated on: 2008-07-11 06:46:03