Port number 22 is the default port used by a Linux SSH Server. Changing the port of SSH aids in avoiding automated attacks by offering security to your server.<\/p>\n
Security Enhanced Linux or SELinux is a default feature equipped with Red Hat Enterprise Linux. It is responsible to block each port offering access to SSH; port 22 is offered this capability by default.<\/p>\n
If you wish to change your SSH port in SELinux, follow the below given steps.<\/p>\n
1.Login as Root<\/p>\n
2.To check the current settings of the port run semanage. Enter the command: The result displayed will be similar to the one given below: 3.You can proceed with adding the desired port. Use the command: Note: Replace 1234 with the port number you wish to add<\/p>\n 4.Run the below mentioned command to ensure that the port has been added to acceptable port list: Post executing the command, you will find that the port has been added: 5.Use the below given command to restart SSH for changes to apply: Now, you can access SSH via. your desired port. You need to ensure SSH is configured and port is enabled in the firewall as well.<\/p>\n","protected":false},"excerpt":{"rendered":" Port number 22 is the default port used by a Linux SSH Server. Changing the port of SSH aids in avoiding automated attacks by offering security to your server. Security Enhanced Linux or SELinux is a default feature equipped with Red Hat Enterprise Linux. It is responsible to block each port offering access to SSH;… <\/p>\n
\nsemanage port -l | grep ssh<\/strong><\/p>\n
\nssh_port_t tcp 22<\/strong><\/p>\n
\nsemanage port -a -t ssh_port_t -p tcp 1234<\/strong><\/p>\n
\nsemanage port -l | grep ssh<\/strong><\/p>\n
\nssh_port_t tcp 1234,22<\/strong><\/p>\n
\n\/sbin\/service sshd restart<\/strong><\/p>\n