HOW TO SECURE OR CHANGE DEFAULT SSH PORT ON LINUX CENTOS 7
HOW TO SECURE OR CHANGE DEFAULT SSH PORT ON LINUX CENTOS 7
Instructions to secure default ssh port 22
Step1.
Edit SSHD (SSH server daemon) configuration file by using your favorite text editor:
nano /etc/ssh/sshd_config
Add the following code to either the top or the bottom of the configuration file
SSH Port
Port 2020 # the port you want to change it
Step2.
Update the firewall. If you have disabled the firewall, then you can skip this step.
Running below given commands for allowing new ssh port 2020
firewall-cmd --add-port 2020/tcp --permanent
firewall-cmd --add-port 2020/tcp
Step3.
Restart the SSH server (SSHD)
service sshd restart
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