MicMek's Blog CopTECH

19Mar/091

What’s blocking port 80?!

After trying to run an Apache webserver for a while now... I finally figured out what's wrong.

Firstly, I couldn't detect if it was a firewall blocking problem or a user not having the right privilages to run a webserver.

With the help of google I discovered a command that lets you find all the the ports open on your computer and the PID's of each process so that you can kill that process.

Run NETSTAT -ano on the command line and write down the PID number, of the port that is open that you want free.
From a task manager you can see what process is having the PID, and you can tell which program is using that port.

In my situation it was skype that was using up port 80. Arrghh

Hope this comes in good use!

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  1. FYI, if you are trying to access port 80 from an external IP address, a lot of residential ISPs block incoming traffic on that port as well as inboud/outbound on port 25.


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