Protocol Deep Dive: SSH and Telnet

by David Clinton

If you need to connect remotely to your servers and network devices, then SSH and Telnet are tools you can't ignore. Learn how the protocols work, and how to troubleshoot when they don't.

What you'll learn

Remote connectivity is a basic and critical tool for just about any modern technology task, and the SSH - and to a much lesser degree, Telnet - protocols can play large parts in connectivity solutions. However, the complexity of network infrastructure means that establishing and maintaining reliable connections can sometimes be challenging. This course, Protocol Deep Dive: SSH and Telnet, will help you overcome those challenges. You'll start with some SSH connectivity troubleshooting and debugging, as well as care and feeding of the Wireshark network monitoring tool. You'll also get to see the Telnet remote communication protocol, when to use it...and when to avoid it. After completing this course, you'll be able to describe the basic design and function of both SSH and Telnet, tackle some common problems, and have experienced some helpful troubleshooting techniques.

About the author

David taught high school for twenty years, worked as a Linux system administrator for five years, and has been writing since he could hold a crayon between his fingers. His childhood bedroom wall has since been repainted. David has administered, written about, and created training material for many cutting edge technical subjects, including Linux systems, Cloud Computing (in particular Amazon's AWS), container technologies like Docker, and many in-demand DevOps tools.

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