Configuring Linux servers for remote support

What's the best way to configure Linux clients and servers for remote support?

There are many specialty type products on the market that cater to the Windows crowd which provide remote control support and the capability to dial into their boxes. With Linux, things work differently. All you need to do is configure ssh (which is typically already installed on any Linux box) to provide remote support capability. For those of you already familiar with telnet, SSH is a more secure way of remotely logging in to Linux clients or servers. Secure Shell or SSH is a set of standards and an associated network protocol which establishes a secure channel between a local and a remote computer. It provides confidentiality and integrity of data exchanged between the two computers. Typically, SSH is used to log into a remote machine and execute commands, but it also supports tunneling and forwarding TCP ports and X11 connections. An SSH server, by default, listens on the standard TCP port 22 and is usually already configured to run out of any Linux box. The server based SSH configuration files are usually ssh and sshd.conf, usually in the /etc directory. You can get the SSH client, puddy, for free.