Install SSH on a Linux Machine

1. Install SSH: sudo apt-get install ssh
2. Configure it:
   1. sudo vi /etc/ssh/sshd_config
   2. /Port 22[Enter] to search for “Port 22” and replace with a number greater than 1024
   3. Set these options:
      PermitRootLogin no
      X11Forwarding no
      UsePAM no
      UseDNS no
      AllowUsers [username]
   4. Restart the service: sudo service ssh reload
   5. Check you can login on the new port (run ifconfig to see IP).