This tutorial isn't going to cover how to install SSH, but will cover how to use it for a variety of tasks. Consult your Linux distribution's document for information on how to setup OpenSSH.

Chances are that if you are using a version of Linux that was installed within the last 4 or 5 years that you already have OpenSSH installed. The version of SSH that you will want to use on Linux is called OpenSSH. As of this writing (January 2006), the latest version available is 4.2, but you may encounter versions from 3.6 on up. If you are using anything lower than version 3.9, you should upgrade it.

SSH (secure shell) is a program enabling secure access to remote filesystems. Not everyone is aware of other powerful SSH capabilities, such as passwordless login, automatic execution of commands on a remote system or even mounting a remote folder using SSH! In this article we’ll cover these features and much more.

This cipher mode introduces multi-threading into the OpenSSH application in order to allow it to make full use of CPU resources available on multi-core systems. As the canonical distribution of OpenSSH is unable to make use of more than one core, high performance transfers can be bottlenecked by the cryptographic overhead.

All right, so maybe this isn't quite the ultimate. But this howto will show you the fundamental ways to use OpenSSH; how to generate public/private key pairs and strong passphrases, and how to use the wonderful Keychain utility to automate your SSH logins. This is exceptionally handy when you log in and out frequently, and don't want to keep entering your passphrase.

One can do a lot more with ssh than use it for remote terminal session. Here we'll show how to copy files using ssh, use ssh as part of a pipe, vnc or samba forwarding via ssh and mounting filesystems using ssh (fuse + sshfs)

There are currently two versions of the SSH protocol in use, which are SSH1 and SSH2. The SSH1 protocol can be exploited through its connection setup protocol and is, therefore, not commonly used anymore. The SSH2 protocol however, has a more robust and more flexible connection-setup. There are two enterprise-level versions of SSH: one derived from ssh.com, and the other is OpenSSH. OpenSSH is free and used more often. In fact, OpenSSH is included with most Linux distributions.

In this article, I show you how to use the scp (secure copy) command without needing to use passwords. I then show you how to use this command in two scripts. One script lets you copy a file to multiple Linux boxes on your network, and the other allows you to back up all of your Linux boxes easily.

[ . . . ]

But what I like best about scp is it's easily scriptable...

For communicating anonymously on the Internet you use Tor. For secure communications, so that nobody can read your private information you use SSH. Combine both, and you have a secure and anonymous communication. In this hack, we’ll show you how to use Tor to anonymize your SSH connections.