I wrote the book with a focus on penetration testers and red teamers, but there are great examples for network admins, developers, and blue team defenders as well.

You can pick up a copy for free here through May 19, 2019: https://gumroad.com/l/the_cyber_plumbers_handbook/hackernews...

Please note, because it's hosted on Gumroad, it does require an email. If you don't want to give out your actual email, check out an anonymous email service. I give it away to students for free, so if you know of one that might like it, send them here to get instructions: https://cph.opsdisk.com

About The Cyber Plumber's Handbook...

This book is packed with practical and real world examples of SSH tunneling and port redirection in multiple realistic scenarios. It walks you through the basics of SSH tunneling (both local and remote port forwards), SOCKS proxies, port redirection, and how to utilize them with other tools like proxychains, nmap, Metasploit, and web browsers.

Advanced topics included SSHing through 4 jump boxes, throwing exploits through SSH tunnels, scanning assets using proxychains and Metasploit's Meterpreter, browsing the Internet through a SOCKS proxy, utilizing proxychains and nmap to scan targets, and leveraging Metasploit's Meterpreter portfwd command.

Let me know if you have any questions! Looking forward to your comments/feedback.