How to Use Port Knocking To Secure SSH Service in Linux

Posted by tecmint on Jun 23, 2021 10:07 AM EDT
Tecmint; By James Kiare 		Mail this story
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Port Knocking is a nifty technique of controlling access to a port by only allowing legitimate users access to the service running on a server. It works in such a way that when the right sequence of connection attempts is made, the firewall gladly opens the port that was closed.

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