Security News > 2021 > September > How to secure SSH logins with port knocking

Knock, knock ... who's there? SSH. SSH who? You need to lock down your servers so that only you have access via SSH. One way to help that is with knockd.

There are always things you can do to make SSH more secure.

The idea is to create two knocking sequences on your server, one to open the SSH port and one to close it.

It's not perfect, but in conjunction with SSH key authentication, SSH will be considerably more secure on your servers.

Let me show you how to install and use knockd for port knocking on SSH.What you'll need.

After the closing knock sequence, you should no longer be able to access that remote server via SSH. And that's all there is to using knockd to better secure SSH access on your remote Linux servers.

News URL

https://www.techrepublic.com/article/how-to-secure-ssh-logins-with-port-knocking/#ftag=RSS56d97e7