Cyber Plumber's Lab Guide & Labs Access 33% off US$13.37 (US$5 For Students) @ Gumroad

I have had my eye on this package for some time, and just pulled the trigger on it. Mostly because I wanted to give back to the author of the original Cyber Plumbers Handbook, which was released for free at some time in the recent past that I cannot be bothered looking up right now.

This can be had for $5USD if you have a .edu address.

Note that you can lab the exercises for free at home if you have the capacity.

Learn how to bend TCP traffic to your will and become an SSH wizard.

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SSH tunneling is a skill you can use for the rest of your IT career. SSH tunneling and port redirection are skills that can be applied in any information technology discipline, so it does not matter if you are a network engineer, red teamer, penetration tester, developer or something in between. That being said, the examples tend to skew towards pairing tunneling techniques with penetration testing tools.

Lab Description
Four jump boxes provide the Internet facing portion of the lab. However, the fun really starts when you start leveraging tunneling techniques to reach the internal side of the network to access services such as Secure SHell (SSH), Web, and Remote Desktop Protocol (RDP). The Linux and Windows targets are also running vulnerable services that can be exploited for the true tunneling ninjas. Each of the exercises has a brief description and solution to assist you in the event you get stuck.

Requirements
The interactive lab portion requires a Linux-based host or virtual machine (preferably Kali), Internet access, a basic grasp of networking and Information Technology fundamentals, and Linux commands. The use of a Windows Operating System to access the lab has not been tested. Immediately after purchasing this, you will receive an SSH private key via email and instructions on how to access the lab. Your lab time starts immediately after purchasing, so plan accordingly!