SSH server allows users to connect remotely in a secure way and allows access to file transfers. Installation of the SSH server on Ubuntu requires the use of command 'sudo aptitude install ssh' and through the Login ID and the password reported in Ubuntu , one can have encrypted remote access. To connect, the command line must be used and the server can be accessed from Windows through open source clients such as PuTTY and WinSCP. SSH server can be installed through a proxy server after the package connect-proxy gets installed.
sudo aptitude install connect-proxy
To run the ssh server on another port which the port 22 standard:
This little trick ensures that the server is identified by a scan of IP address ranges, and thus reduce some risks.