E

encrypting

communications between hostsHow to Log In to a Remote Host With Secure Shell

network traffic between hostsSecure Shell (Overview)

encryption

specifying algorithms in ssh_config fileKeywords in Secure Shell Configuration Files

environment variables

overriding proxy servers and portsHow to Set Up Default Secure Shell Connections to Hosts Outside a Firewall

Secure Shell andSecure Shell and Login Environment Variables

use with ssh-agent commandCommands in Secure Shell