Firewall to stop high load,

In another post someone told me about my high load problem:

"
tcp 0 0 72.36.179.22:80 72.36.179.22:44536 TIME_WAIT

A site making a request to itself is a serious design flaw, since you tie up two Apache with one request. Hunt that down and kill it. Add a firewall rule to block it, too, so you're not tempted toward it in the future.

You can add a firewall rule that basically says
If source is me and destination is me:80, deny the packet.
"
Need to do that please but no idea how, i have a dedicated server with CENTOS, cpanel, whm.

Dont know what kind of firewall to install or how to do this exactly:

"You can add a firewall rule that basically says
If source is me and destination is me:80, deny the packet."

Thanks.

 

 

 

 

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