There is exactly one SSH book worth recommending, and it is genuinely excellent. Most people learn SSH through man pages and trial-and-error, which leaves gaps: you can connect to servers, but agent forwarding, ProxyJump chains, certificate-based authentication, and SOCKS proxies remain mysterious. Michael Lucas’ book fills every one of those gaps.
For a quick command reference, see our SSH commands cheat sheet for Linux sysadmins.
Last reviewed: March 2026. Current for OpenSSH 9.x.
SSH Mastery: OpenSSH, PuTTY, Tunnels and Keys, 2nd Edition
Michael W. Lucas writes technical books the way sysadmins think: direct, practical, and occasionally funny. SSH Mastery (241 pages) covers key management (Ed25519, RSA, ECDSA generation, rotation, and revocation), SSH agent forwarding with its security implications, ProxyJump for reaching hosts behind bastion servers, SSH certificates as a scalable alternative to managing authorized_keys across hundreds of servers, port forwarding (local, remote, and dynamic SOCKS proxy), PuTTY configuration for Windows, and sshd_config hardening for production servers.
The 2018 publication date might seem old, but SSH fundamentals have not changed. Key management, tunneling, and agent forwarding work the same way in OpenSSH 9.x as they did when this book was written. For newer features like FIDO2 hardware key support (added in OpenSSH 8.2), the official OpenSSH documentation supplements the book well.
- Author: Michael W. Lucas
- Published: February 2018 (Tilted Windmill Press, 2nd Edition)
- Pages: 241
- Best for: Every sysadmin who SSHs into servers daily
- Amazon: Buy on Amazon
Why only one book?
Most “SSH books” on Amazon are self-published padding, rehashed man pages, or outdated material. Lucas’ book is the only one written by a practitioner who clearly uses SSH in production daily and explains the reasoning behind every recommendation. Until someone writes a competing title of similar quality, this is the only recommendation worth making.