Login as the root user or as a user that can execute sudo commands.
#open this file for editing... vim /etc/ssh/sshd_configFind the line that reads
Port 22Change this to an different and an available port number...
Port 8000Next reload ssh
/etc/init.d/ssh reloadYou won't be kicked out of your session. But if you want to open a new connection to your server you need to specify the port number for the connection.
ssh -p8000 firstname.lastname@example.org