SSH Mastery: OpenSSH, PuTTY, Tunnels and Keys    by Michael W Lucas
Price: $9.99 USD. 36320 words. Published by Tilted Windmill Press  on January 19, 2012. .
Secure Shell (SSH) lets systems administrators securely manage remote systems. But most people only use the bare minimum SSH offers. Used properly, SSH simplifies your job. This book saves you from sifting a decade of obsolete online tutorials and quickly gets you running:SSH with the OpenSSH server and the PuTTY and OpenSSH clients. Master SSH with SSH Mastery.

Darknet - A Beginner's Guide to Staying Anonymous Online    by Lance Henderson
Price: $4.99 USD. 10620 words. Published on November 11, 2012. .
Trust, but Verify. That has been the adage online as well as off, but do you really know how to protect yourself against identity thieves, government snoops, and other misfits nosing into your online affairs? What you do online is *your* business, and belongs to no one else.

Anonymous File Sharing & Darknet - How to be a Ghost in the Machine    by Lance Henderson
Price: $3.99 USD. 13090 words. Published on February 21, 2013. .
Trust, but Verify. That has been the adage online as well as off, but do you really know how to protect yourself against identity thieves, government snoops, and other misfits nosing into your online affairs? What you do online is *your* business, and no one else. Master Freenet, Truecrypt, Tor, VPNs, Proxies and much more to hide your online identity and preserve your privacy.