How to change the default SSH Port number on Linux server

By | July 26, 2017

Secure shell(SSH) default port number is 22.This default port number leads to huge automated DDoS attack on the server.By changing the deault SSH port number will helps to stop many automated DDoS attack because it’s bit harder to get the port number

Here we are going to discussed about changing the default port number on Linux system.

Login to your server via SSH as a root user

To change SSH port number you need to find configuration file.Configuration file of SSH is sshd_config and the location of this file /etc/ssh.

Using below command to edit the configuration file

nano /etc/sshd/sshd_config

To find this line #22 on configuration file and replace the port number as per your wish and save it.

*Before proceeding this make sure the mentioned port number is opened on your server

After that,you will restart SSH service by using the below command

systemctl restart sshd.service

Now you can able to login your server by using replaced port number.

 

 

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