Secure Shell

Secure Shell (or SSH) is a network protocol that allows data to be exchanged using a secure channel between two networked devices. Secure Shell uses GNU ZLIB (LZ77) for compression. Compression uses less bandwidth and CPU ratios winds up faster overall. It's supported by many online servers (list of servers and SSH keys).

If you're on *NIX and are tired of entering passwords for the main SSH login, then copy sorear's $HOME/.ssh/config.