Date Posted:12-04-2017<\/strong><\/p>\n By default linux machine SSH port is 22 and root login would be enabled. We will explain on how to change SSH default port and Disable SSH Root login. We need to make sure to add new user\u00a0which has privilege to become root.<\/p>\n Login to server as a root user.<\/p>\n Open the file\u00a0\/etc\/ssh\/sshd_config\u00a0<\/em>and change the line Port<\/span>\u00a0to random port. In our example, we will change the port number to 2222<\/p>\n from<\/p>\n Port 22<\/p><\/blockquote>\n To<\/p>\n Port 2222<\/p><\/blockquote>\n Restart sshd service<\/p>\n Open a new terminal on your local machine and new way to login to the server is to use new port<\/p>\n Lets create a new user on the host.<\/p>\n Assign the password for the user<\/p>\n Now, its time to add the user to sudoers file to run all the commands. Execute the command visudo and add the content<\/p>\n altroot ALL=(ALL) ALL<\/p><\/blockquote>\n Save the file.<\/p>\n Try login from new terminal on your local machine using the new login. If you followed this post from beginning then SSH port is also different.<\/p>\nImplementation:<\/h4>\n
Change Default SSH Port<\/h5>\n
vi \/etc\/ssh\/sshd_config<\/code><\/p>\n\/etc\/init.d\/sshd restart<\/code><\/p>\nssh username@IPaddress -p2222<\/code><\/p>\nDisable Direct Root login:<\/h5>\n
useradd altroot<\/code><\/p>\npasswd altroot<\/code><\/p>\nvisudo<\/code><\/p>\n