As being a Linux system administrator, one should monitor SSH log in activities to trace out failed log in attempts. This is required now-a-days because attackers are targeting SSH connections and if you are running SSH service on a default port then you can definitely become a victim of attackers.<\/p>\n
All SSH failed log in attempts are saved at \/var\/log\/secure<\/b> file. But it becomes cumbersome job to monitor all such failed log in attempts regularly.<\/p>\n
Therefore, implement a very simple and secure way to overcome from the failed SSH attempts is change SSH connection port from the default to any random value. There are just 2 simple steps to change the SSH port. Once you are done with it, your server will become more secure than it was earlier.<\/p>\n
Step – 1:-<\/b> Open sshd_config file using any text editor installed in your server<\/p>\n
Step – 2:-<\/b> After opening the configuration file, change the SSH port from 22 to any random number like 6340<\/p>\n$ nano \/etc\/ssh\/sshd_config<\/span><\/code><\/p>\n