Michael Lucas eBooks

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 easy-to read, informal tutorial for implementing electronic privacy on the cheap using the standard tools of the email privacy field - commercial PGP and non-commercial GnuPG (GPG). The book shows how to integrate these OpenPGP implementations into the most common email clients and how to use PGP and GPG in daily email correspondence to both send and receive encrypted email. The PGP GPG book is written for the moderately skilled computer user who is unfami...

Unlike packet sniffers that require you to reproduce network problems in order to analyze them, flow analysis lets you turn back time as you analyze your network. You'll learn how to use open source software to build a flow-based network awareness system and how to use network analysis and auditing to address problems and improve network reliability. You'll also learn how to use a flow analysis system; collect flow records; view, filter, and report flows; present flow records graphically; and use flow records to proactively improve your network. Network Flow Analysis will show you how to: Identify network, server, router, and firewall problems before they become critical Find defective and misconfigured software Quickly find virus-spewing machines, e...

Cisco routers are the standard devices used to connect companies to the Internet. They are highly reliable and robust, and support anything from small connections to huge circuits used by telephone companies. Cisco Routers for the Desperate is a brief, meaty introduction to Cisco routers that will make a competent systems administrator comfortable with the Cisco environment, teach them how to troubleshoot problems, and take them through the basic tasks of router maintenance and integration into an existing network.When a system almost never breaks, the tech support people responsible for it do not have the opportunity to learn about it. When it does break, repairs can take a long time simply because the people responsible don't know what to do! This ...

This straightforward, practical, and complete guide to mastering the powerful and complex OpenBSD operating system, is for the experienced UNIX user who wants to add OpenBSD to his or her repertoire. The author assumes a knowledge of basic UNIX commands, design, and permissions. The book takes you through the intricacies of the platform and teaches how to manage your system, offering friendly explanations, background information, troubleshooting suggestions, and copious examples throughout....