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 (more…)

This soup-to-nuts collection of recipes covers everything you need to know to perform your job as a Linux network administrator, whether you’re new to the job or have years of experience. With Linux Networking Cookbook, you’ll dive straight into the gnarly hands-on work of building and maintaining a computer network. Running a network doesn’t mean you have all the answers. Networking is a complex subject with reams of reference material that’s difficult to keep straight, much less remember. If you want a book that lays out the steps for specific tasks, that clearly explains the commands and configurations, and does not tax your patience with endless ramblings and meanderings into theory and obscure RFCs, this is the book for you. You will find recipes for: Building a gateway, firewall, and wireless access point on a (more…)

Linux, like all Unix variants, was built for networking above all. As a result, its networking features are flexible and reliable and daunting to Linux newcomers who aren’t familiar enough with terms and concepts even to know what to look for in the documentation. Bryan Pfaffenberger does a service to people new to Linux networking with Linux Networking Clearly Explained, an assume-nothing guide to local area networks (LANs) and Internet connectivity under the open-source operating system. Pfaffenberger shows how to do everything file sharing, printer sharing, inter-machine backups, and Internet connection sharing that most home and office computer users want to do with their LANs. He explains how Linux fits into an environment of diverse equipment, showing how to make Linux machines talk to Mac OS units and Windows computers. (more…)

Concentrating on Linux installation, tuning, and administration, this guide to protecting systems from security attacks demonstrates how to install Linux so that it is tuned for the highest security and best performance, how to scan the network and encrypt the traffic for securing all private traffics in a public network, and how to monitor and log the system to detect potential security problems. Backup and recovery policies that provide a structure for secure operations are also considered, and information related to configuring an Apache server, e-mail service, and the Internet gateway using a proxy server, an FTP server, DNS server for mapping DNS names to IP addresses, and firewall for system protection is provided. (more…)

Beginning Fedora: From Novice to Professional guides you through the tasks most new Linux users desire to perform while explaining potentially confusing concepts along the way. It will steer you through system customization opportunities and common tasks like listening to audio CDs and MP3s, watching movies, and performing office- and Internet-related jobs. A large part of the book is dedicated to advanced command-line techniques necessary to maintain your system and become a true Linux master!

Highlights of this title include the following:

* Provides an illustrated, step-by-step guide to Fedora installation and hardware (more…)

System administrators need to stay ahead of new security vulnerabilities that leave their networks exposed every day. A firewall and an intrusion detection systems (IDS) are two important weapons in that fight, enabling you to proactively deny access and monitor network traffic for signs of an attack.

Linux Firewalls discusses the technical details of the iptables firewall and the Netfilter framework that are built into the Linux kernel, and it explains how they provide strong filtering, Network Address Translation (NAT), state tracking, and application layer inspection capabilities that rival many commercial tools. You’ll learn how to deploy iptables as an IDS with psad and fwsnort and how to build a strong, passive authentication layer around iptables with fwknop. (more…)

The Linux Network Administrator’s Guide, Third Edition dispenses all the practical advice you need to join a network. Along with some hardware considerations, this highly acclaimed guide takes an in-depth look at all of the essential networking software that comes with the operating system–including basic infrastructure (TCP/IP, wireless networking, firewalling) and the most popular services on Linux systems. But as the follow-up to a classic, the third edition of the Linux Network Administrator’s Guide does more than just spruce up the basics. It also provides the very latest information on the following cutting-edge services:

* Wireless hubs.
* OpenLDAP. (more…)

Ubuntu Linux is a state-of-the-art operating system, and you need a book that’s just as advanced. Along with being the most comprehensive reference to installing, configuring, and working with Ubuntu, A Practical Guide to Ubuntu Linux« also provides extensive server coverage you won’t find in any other Ubuntu book.

Best-selling author Mark Sobell begins by walking you through every feature and technique you need to know, from installing Ubuntu using the DVD included with the book to working with GNOME, Samba, exim4, Apache, DNS, NIS, firestarter, and iptables. Sobell’s exceptionally clear explanations demystify everything from system security to Windows file/printer sharing. (more…)

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 (more…)

The Linux operating system is widely used for networking and software development. It includes features to identify and control breaches of security, both internal and external. Linux Security gives you the knowledge to maximize the benefits of Linux products, keep your business safe, and gain a competitive edge!

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