OpenPGP is the most widely used email encryption standard in the world. It is based on PGP (Pretty Good Privacy) as originally developed by Phil Zimmermann. The OpenPGP protocol defines standard formats for encrypted messages, signatures, and certificates for exchanging public keys. PGP & GPG is an [...]
FreeBSD--the powerful, flexible, and free Unix-like operating system--is the preferred server for many enterprises. But it can be even trickier to use than either Unix or Linux, and harder still to master.
"Absolute FreeBSD, 2nd Edition" is your complete guide to FreeBSD, written by FreeBSD comm[...]
The definitive guide to OpenBSD Foreword by Henning Brauer, OpenBSD PF Developer OpenBSD, the elegant, highly secure Unix-like operating system, is widely used as the basis for critical DNS servers, routers, firewalls, and more. This long-awaited second edition of Absolute OpenBSD maintains author [...]
"Trainers have to be creative if they want their participants to feel excited, challenged, and involved. "The Creative Training Idea Book" is packed with instructions for using activities, games, puzzles, toys, and props to increase energy and active participation in the classroom, and reveals how t[...]