The Underground Guide To Unix

This lively, irreverent book gives straighforward advice on the best way to perform any task in the UNIX environment. Regardless of the UNIX version used by the reader, John Montgomery unlocks the mysteries of the file system and covers all the essentials for exploiting the power of the UNIX operating system. For practical advice on everything from customizing any UNIX environment, to preventing and surviving common UNIX disasters, this book is fun for serious users.

Now covers Red Hat Linux! Written by Evi Nemeth, Garth Snyder, Scott Seebass, and Trent R. Hein with Adam Boggs, Rob Braun, Ned McClain, Dan Crawl, Lynda McGinley, and Todd Miller "This is not a nice, neat book for a nice, clean world. It's a nasty book for a nasty world. This is a book for the rest of us." –Eric Allman and Marshall Kirk McKusick "I am pleased to welcome Linux to the UNIX System Administration Handbook!" –Linus Torvalds, Transmeta "This book is most welcome!" –Dennis Ritchie, AT&T Bell Laboratories This new edition of the world's most comprehensive guide to UNIX system administration is an ideal tutorial for those new to administration and an invaluable reference for experienced professionals. The third edition has been expanded to include "direct from the frontlines" coverage of Red Hat Linux. UNIX System Administration Handbook describes every aspect of system administration–from basic topics to UNIX esoterica–and provides explicit coverage of four popular UNIX systems: This book stresses a practical approach to system administration. It's packed with war stories and pragmatic advice, not just theory and watered-down restatements of the manuals. Difficult subjects such as sendmail, kernel building, and DNS configuration are tackled head-on. Examples are provided for all four versions of UNIX and are drawn from real-life systems–warts and all. "This book is where I turn first when I have system administration questions. It is truly a wonderful resource and always within reach of my terminal." –W. Richard Stevens, author of numerous books on UNIX and TCP/IP "This is a comprehensive guide to the care and feeding of UNIX systems. The authors present the facts along with seasoned advice and numerous real-world examples. Their perspective on the variations among systems is valuable for anyone who runs a heterogeneous computing facility." –Pat Parseghian, Transmeta "We noticed your book on the staff recommendations shelf at our local bookstore: 'Very clear, a masterful interpretation of the subject.' We were most impressed, until we noticed that the same staff member had also recommended Aunt Bea's Mayberry Cookbook." –Shannon Bloomstran, history teacher

How much backup is enough? If your computer is on a network, who can read your files? How long would it take to get your computer up and running again after a flood or lightning strikes? Security expert Michael Alexander (who has himself lost enough data to fill a small black hole) takes you step by step through the basics of practical computer security for everyone, whether you're on a LAN in an office, dialing up from your portable, or running your own small business on one machine. In The Underground Guide to Computer Security you'll learn how to evaluate the many hardware and software options available to protect your computer and your data. You'll get expert advice on how to choose the best antivirus software, backup system, power protection gear, diagnostic utilities, and encryption programs. Create hacker-proof passwords. Keep your information safe - and private! - in a networked world. Get practical strategies to protect yourself from coworkers using the company LAN to snoop through your files as well as from professional information thieves on dial-up services and the Internet. Develop simple back-up and disaster recovery plans that offer the right amount of information security for your needs. And much more! Every page has something you can use immediately. This book is packed wall to wall with hands-on advice, warnings, tips, virus alerts, workarounds, and the kind of nitty-gritty explanations that could only come from someone who eats, sleeps, and breathes computer security.

If you are looking for a complete guide on how to install, configure, and use Linux as operating system, and a simple, step-by-step method for becoming a hacker, then keep reading... 4 Books in 1! This Book Includes: Linux for BeginnersLinux for HackersHacking with LinuxHacking with Kali Linux Linux is a free and freely distributed operating system inspired by the UNIX system, written by Linus Torvalds with the help of thousands of programmers. Unlike other operating systems, such as MacOS (Apple operating system), UNIX is not intended to be easy to use, but to be extremely flexible. It is generally as easy to use as other operating systems, although great efforts are being made to facilitate its use. This operating system is an option to be taken into account by those users who are dedicated to work through networks, devote to programming, or learn hacking techniques. Especially for hackers, Linux is the best operating system on the market because it allows to perform a wide variety of tasks and transform your computer into an incredible hacking machine. Learn the hacking skills requires time. However, everything is possible with the correct guide and a lot of useful information. If you are ready to learn how to hack with Linux, then this book is your best bet. This is a detailed guide to learn all the principles of hacking and how to turn your Linux system into an unstoppable machine! You'll learn: Basic system concepts How to understand the user interface How to handle possible mistakes and errors How the operating system architecture works Basics of Linux and Hacking How to use Linux commands The correct hacking procedure Web and network hacking tools Ethical and unethical parts of hacking The hierarchy of hackers How to prevent cyber-attacks and malwares Cyber-security and cryptography Why is Kali Linux the best option for every hacker And much more Even if you are a complete beginner on programming this book will give you the correct information to understand the subject and start practicing today! As you reach the end of the book, you shall have a clearer picture of how the working environment works. The book has clear, simple explanations that can be easy to understand and thus, your journey towards learning how to hack shall be simplified. Start your journey! Develop underground hacking skills and turn your Linux system into a powerful, unbreakable, and unstoppable machine! Get This Book Today, Scroll Up and Click the Buy Now Button!

With a sense of humor and in plain English, Finnie shows power users how to get up and running fast and effectively, how to take advantage of fancy new gadgets like the online communications tools and file management capabilities, how to make applications and devices work together under Windows 95--and make them like it--how to solve most common problems, and more.

This book is the definitive guide on the OSSEC Host-based Intrusion Detection system and frankly, to really use OSSEC you are going to need a definitive guide. Documentation has been available since the start of the OSSEC project but, due to time constraints, no formal book has been created to outline the various features and functions of the OSSEC product. This has left very important and powerful features of the product undocumented...until now! The book you are holding will show you how to install and configure OSSEC on the operating system of your choice and provide detailed examples to help prevent and mitigate attacks on your systems. -- Stephen Northcutt OSSEC determines if a host has been compromised in this manner by taking the equivalent of a picture of the host machine in its original, unaltered state. This "picture" captures the most relevant information about that machine's configuration. OSSEC saves this "picture" and then constantly compares it to the current state of that machine to identify anything that may have changed from the original configuration. Now, many of these changes are necessary, harmless, and authorized, such as a system administrator installing a new software upgrade, patch, or application. But, then there are the not-so-harmless changes, like the installation of a rootkit, trojan horse, or virus. Differentiating between the harmless and the not-so-harmless changes determines whether the system administrator or security professional is managing a secure, efficient network or a compromised network which might be funneling credit card numbers out to phishing gangs or storing massive amounts of pornography creating significant liability for that organization. Separating the wheat from the chaff is by no means an easy task. Hence the need for this book. The book is co-authored by Daniel Cid, who is the founder and lead developer of the freely available OSSEC host-based IDS. As such, readers can be certain they are reading the most accurate, timely, and insightful information on OSSEC. * Nominee for Best Book Bejtlich read in 2008! * http://taosecurity.blogspot.com/2008/12/best-book-bejtlich-read-in-2008.html • Get Started with OSSEC Get an overview of the features of OSSEC including commonly used terminology, pre-install preparation, and deployment considerations. • Follow Steb-by-Step Installation Instructions Walk through the installation process for the "local , “agent , and "server" install types on some of the most popular operating systems available. • Master Configuration Learn the basic configuration options for your install type and learn how to monitor log files, receive remote messages, configure email notification, and configure alert levels. • Work With Rules Extract key information from logs using decoders and how you can leverage rules to alert you of strange occurrences on your network. • Understand System Integrity Check and Rootkit Detection Monitor binary executable files, system configuration files, and the Microsoft Windows registry. • Configure Active Response Configure the active response actions you want and bind the actions to specific rules and sequence of events. • Use the OSSEC Web User Interface Install, configure, and use the community-developed, open source web interface available for OSSEC. • Play in the OSSEC VMware Environment Sandbox • Dig Deep into Data Log Mining Take the “high art of log analysis to the next level by breaking the dependence on the lists of strings or patterns to look for in the logs.