Recognized Linux expert John Terpstra and security evangelist and 25-year IT industry veteran, Roberta Bragg cut through the noise to show you how to bullet proof your system before you are hacked! No more "hack and patch!" Harden your Linux system before it is hacked. "Do this now, here's why, here's how and don't stop there!" Administrators and IT Pros have to do more with less. They don't want multiple choice/consequences. They want to know what to do now to protect their systems against malicious attacks. "Hacking Exposed Linux" shows how to test, hack, and find the security holes and fix them. "Hardening Linux" shows you how to secure your Linux system to work securely in the first place.

Designed as an introduction to UNIX system crash dump analysis, this is the first book to discuss in detail UNIX system panics, crashes and hangs, their causes, what to do when they occur, how to collect information about them, how to analyze that information, and how to get the problem resolved. KEY TOPICS: Part One covers theory and tools. Part Two looks inside UNIX, from the header files to hardware tape drives. Part Three provides actual case studies of software, hardware, data, and system fault problems. For systems and network administrators and technical support engineers responsible for maintaining UNIX computer systems and networks.

GNU/Linux is an immensely popular operating system that is both extremely stable and reliable. But it can also induce minor headaches at the most inopportune times, if you're not fully up to speed with its capabilities.

A unique approach to running and administering Linux systems, Linux Annoyances for Geeks addresses the many poorly documented and under appreciated topics that make the difference between a system you struggle with and a system you really enjoy. This book is for power users and system administrators who want to clear away barriers to using Linux for themselves and for less trained users in their organizations.

This book meticulously tells you how to get a stubborn wireless card to work under Linux, and reveals little-known sources for wireless drivers and information. It tells you how to add extra security to your systems, such as boot passwords, and how to use tools such as rescue disks to overcome overly zealous security measures in a pinch. In every area of desktop and server use, the book is chock full of advice based on hard-earned experience.

LPI Linux Certification in a Nutshell, Second Edition is an invaluable resource for determining what you need to practice to pass the Linux Professional Institute exams. This book will help you determine when you're ready to take the exams, which are technically challenging and designed to reflect the skills that administrators need in real working environments.

As more corporations adopt Linux as the networking backbone for their IT systems, the demand for certified technicians will become even greater. Passing the LPI exams will broaden your career options because the LPIC is the most widely known and respected Linux certification program in the world. Linux Journal recognized the LPI as the best Training and Certification Program. The exams were developed by the Linux Professional Institute, an international, volunteer-driven organization with affiliates in a dozen countries.

This book is the book you need to run your business with Red Hat. It provides comprehensive coverage on how to manage and network the Red Hat Linux OS and step-by-step instructions needed to maintain and/or add to the Red Hat Linux system.

This book features an entire part on security and problem solving that covers detecting intrusions/hacking, implementing local security, firewalls, and Internet security. Other topics include: RAID; TCP/IP networking; connecting to Microsoft networks; connecting to Apple networks; the Red Hat network; upgrading and customizing the kernel; using scripts; backing up and restoring the file system.

This book is the result of an iterative process of consulting with experts in the field of computer and network security. The list of contributors includes staff at well-known organizations like the Computer Emergency Response Team (CERT) and the U.S. Census Bureau, so it is more than just the two main authors' expertise—it is a collaborative effort of 48 experts.

It is not simply a theoretical book on computer security. First, it details only one Linux distribution, Red Hat 6.0. Users of other distributions will be able to use the book as well, but they will need to fudge things according to the differences between their distribution and Red Hat 6.0. Users of Mandrake 6.x should have no problem; users of Slackware will have to adjust a lot of the information on system startup. Debian users will probably find themselves scrambling to map all the RPM package names to Debian package equivalents.

The first thing users of the Linux operating system come face to face with is the shell. "Shell" is the UNIX term for a user interface to the system — something that lets you communicate with the computer via the keyboard and display. Bash, the Free Software Foundation's "Bourne Again Shell," is the default shell for Linux, the popular free UNIX-like operating system. It's also a replacement for the standard UNIX Bourne shell, which serves both as a user interface and as a programming language. Like the FSF's other tools, bash is more than a mere replacement: it extends the Bourne shell in many ways. Features include command line editing, key bindings, integrated programming features, command completion, control structures (especially the select construct, which enables you to create menus easily), and new ways to customize your environment.

Whether you want to use bash for its user interface or its programming features you will find Learning the bash Shell a valuable guide. The book covers all of bash's features, both for interactive use and programming. If you are new to shell programming, Learning the bash Shell provides an excellent introduction, covering everything from the most basic to the most advanced features, like signal handling and command line processing. If you've been writing shell scripts for years, it offers a great way to find out what the new shell offers. The book is full of examples of shell commands and programs that are designed to be useful in your everyday life as a user, not just to illustrate the feature being explained. All of these examples are freely available to you online on the Internet.

Say goodbye to Windows® crashes, viruses, hassles, and cost!

Moving to Linux can help you migrate from Windows to Linux in just hours! By the time you've finished, you'll be able to do virtually anything in Linux-without the aggravation, crashes, security risks, or high costs of running Windows!

This is not a book for techies! It's a book for people like you: people who write documents, create spreadsheets, surf the Web, send emails, listen to CDs, play games-and want to do it simply in Linux, without becoming technical experts!

There's more!! Write, calculate, and present with OpenOffice.org, the free office suite for Linux that can also read and write all of your existing Microsoft Office documents.

Say goodbye to expensive software upgrades, burdensome Microsoft licensing, Windows viruses, and "blue screens of death." Say hello to computing the way it's supposed to be—with Linux!

Linux and Open Source are attracting unprecedented attention in the high tech world. Debian GNU/Linux is a remarkable demonstration of what the Open Source model can produce: Debian is an all volunteer organization, and their distribution contains only open-source software.

This exciting new world can be intimidating for those whose primary computing experience is Microsoft Windows. In Learning Debian/GNU Linux, Bill McCarty has written a book for this new audience, aimed at introducing them to a Unix style operating system.

This practical guide teaches you how to implement effective network protection by using your own customized firewall solution. Based on extensive practical experience, this book distills a unique set of scenario based scripts and guidelines for a proven firewall solution, into one succinct and precise book.
This book shows you how to implement Linux firewalls and Quality of Service using practical examples from very small to very large networks.
After giving us a background of network security, the book moves on to explain the basic technologies we will work with, namely netfilter, iproute2, NAT and l7-filter. These form the crux of building Linux firewalls and QOS.Providing only necessary theoretical background, the book takes a practical approach, presenting case studies and plenty of illustrative examples.