SSH- SECURE SHELL
It is used to Connect to the remote system through secure shell. It giveyou a copy of remote shell on your desktop.You can also create password less login to the remote system with the help of PUBLIC/PRIVATE keys.
1.For installing SSH open the terminal and type :-
# su <— to become root and enter the password>
# yum install openssh-server
2. After the completion of Installation you have to on the sshd service and start the service.
# chkconfig sshd on
# service sshd restart