Linux Firewalls

Linux Firewalls
Title Linux Firewalls PDF eBook
Author Michael Rash
Publisher No Starch Press
Pages 338
Release 2007-09-07
Genre Computers
ISBN 1593271417

Download Linux Firewalls Book in PDF, Epub and Kindle

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. Concrete examples illustrate concepts such as firewall log analysis and policies, passive network authentication and authorization, exploit packet traces, Snort ruleset emulation, and more with coverage of these topics: –Passive network authentication and OS fingerprinting –iptables log analysis and policies –Application layer attack detection with the iptables string match extension –Building an iptables ruleset that emulates a Snort ruleset –Port knocking vs. Single Packet Authorization (SPA) –Tools for visualizing iptables logs Perl and C code snippets offer practical examples that will help you to maximize your deployment of Linux firewalls. If you're responsible for keeping a network secure, you'll find Linux Firewalls invaluable in your attempt to understand attacks and use iptables—along with psad and fwsnort—to detect and even prevent compromises.

Linux Firewalls

Linux Firewalls
Title Linux Firewalls PDF eBook
Author Robert Loren Ziegler
Publisher Sams Publishing
Pages 596
Release 2002
Genre Computer security
ISBN 9780735710993

Download Linux Firewalls Book in PDF, Epub and Kindle

An Internet-connected Linux machine is in a high-risk situation. "Linux Firewalls, Third Edition" details security steps that any sized implementation--from home use to enterprise level--might take to protect itself from potential remote attackers. As with the first two editions, this book is especially useful for its explanations of iptables, packet filtering, and firewall optimization along with some advanced concepts including customizing the Linux kernel to enhance security.The third edition, while distribution neutral, has been updated for the current Linux Kernel and provides code examples for Red Hat, SUSE, and Debian implementations. Don' t miss out on the third edition of the critically acclaimed "Linux Firewalls,"

Linux Firewalls

Linux Firewalls
Title Linux Firewalls PDF eBook
Author Steve Suehring
Publisher Addison-Wesley Professional
Pages 425
Release 2015-01-23
Genre Computers
ISBN 0134000196

Download Linux Firewalls Book in PDF, Epub and Kindle

The Definitive Guide to Building Firewalls with Linux As the security challenges facing Linux system and network administrators have grown, the security tools and techniques available to them have improved dramatically. In Linux® Firewalls, Fourth Edition, long-time Linux security expert Steve Suehring has revamped his definitive Linux firewall guide to cover the important advances in Linux security. An indispensable working resource for every Linux administrator concerned with security, this guide presents comprehensive coverage of both iptables and nftables. Building on the solid networking and firewalling foundation in previous editions, it also adds coverage of modern tools and techniques for detecting exploits and intrusions, and much more. Distribution neutral throughout, this edition is fully updated for today’s Linux kernels, and includes current code examples and support scripts for Red Hat/Fedora, Ubuntu, and Debian implementations. If you’re a Linux professional, it will help you establish an understanding of security for any Linux system, and for networks of all sizes, from home to enterprise. Inside, you’ll find just what you need to Install, configure, and update a Linux firewall running either iptables or nftables Migrate to nftables, or take advantage of the latest iptables enhancements Manage complex multiple firewall configurations Create, debug, and optimize firewall rules Use Samhain and other tools to protect filesystem integrity, monitor networks, and detect intrusions Harden systems against port scanning and other attacks Uncover exploits such as rootkits and backdoors with chkrootkit

Red Hat Linux Firewalls

Red Hat Linux Firewalls
Title Red Hat Linux Firewalls PDF eBook
Author Bill McCarty
Publisher *Red Hat
Pages 540
Release 2002-12-06
Genre Computers
ISBN 9780764524639

Download Red Hat Linux Firewalls Book in PDF, Epub and Kindle

* Everything readers need to construct firewalls that protect computer networks from attacks and intrusions * Covers the migration from ipchains and how to mange iptable log files * Reviews the customization of firewalls, the Red Hat firewall tool, the firewall setup, and advanced firewall features * Includes numerous examples of firewalls and firewall administration techniques that work on Red Hat Linux systems * Explains how to cost-justify, implement, test, and operate packet filtering firewalls constructed using Red Hat Linux RED HAT(r) PRESS(TM) Linux Solutions from the Experts at Red Hat Red Hat-the world's leading Linux company-presents a series of unrivaled guides that are reviewed and approved by the experts at Red Hat. Each book is packed with invaluable tips and techniques that are ideal for everyone from beginning to advanced network and systems professionals, as well as home and small businesses.

Building Linux and OpenBSD Firewalls

Building Linux and OpenBSD Firewalls
Title Building Linux and OpenBSD Firewalls PDF eBook
Author Wes Sonnenreich
Publisher
Pages 396
Release 2000-02-16
Genre Computers
ISBN

Download Building Linux and OpenBSD Firewalls Book in PDF, Epub and Kindle

A step-by-step guide to bulding a commercial-grade firewall with open source software Building Linux and OpenBSD Firewalls It's now more important than ever before to protect your data and computers from people trying to hack into your network. Without the proper security, the wrong person can gain access to your system and read critical documents, change data, delete items, and much worse. With this book, you'll quickly learn how to protect your network from such attacks as you build a Linux or OpenBSD firewall. From determining how much security you'll need to configuring the firewall and monitoring your system, authors Tom Yates and Wes Sonnenreich clearly guide you through all the necessary steps to improve your security. They show you how to: * Build Linux and OpenBSD firewalls that meet your security needs * Choose the appropriate hardware for each operating system and put the machine together * Configure a firewall that allows network services such as email, newsgroups, and Internet and intranet access * Monitor and update your system to close any holes in security * Detect intruders and restore your network security The companion Web site at www.wiley.com/compbooks/sonnenreich features: * Updates for the most recent releases of OpenBSD and Red Hat * Useful scripts and tools * Sample firewall configurations * Additional online resources

Linux iptables Pocket Reference

Linux iptables Pocket Reference
Title Linux iptables Pocket Reference PDF eBook
Author Gregor N. Purdy
Publisher "O'Reilly Media, Inc."
Pages 98
Release 2004-08-25
Genre Computers
ISBN 1449378986

Download Linux iptables Pocket Reference Book in PDF, Epub and Kindle

Firewalls, Network Address Translation (NAT), network logging and accounting are all provided by Linux's Netfilter system, also known by the name of the command used to administer it, iptables. The iptables interface is the most sophisticated ever offered onLinux and makes Linux an extremely flexible system for any kind of network filtering you might do. Large sets of filtering rules can be grouped in ways that makes it easy to test them and turn them on and off.Do you watch for all types of ICMP traffic--some of them quite dangerous? Can you take advantage of stateful filtering to simplify the management of TCP connections? Would you like to track how much traffic of various types you get?This pocket reference will help you at those critical moments when someone asks you to open or close a port in a hurry, either to enable some important traffic or to block an attack. The book will keep the subtle syntax straight and help you remember all the values you have to enter in order to be as secure as possible. The book has an introductory section that describes applications,followed by a reference/encyclopaedic section with all the matches and targets arranged alphabetically.

Designing and Implementing Linux Firewalls with QoS Using Netfilter, Iproute2, NAT and L7-filter

Designing and Implementing Linux Firewalls with QoS Using Netfilter, Iproute2, NAT and L7-filter
Title Designing and Implementing Linux Firewalls with QoS Using Netfilter, Iproute2, NAT and L7-filter PDF eBook
Author Lucian Gheorghe
Publisher Packt Publishing Ltd
Pages 421
Release 2006-10-31
Genre Computers
ISBN 1847190510

Download Designing and Implementing Linux Firewalls with QoS Using Netfilter, Iproute2, NAT and L7-filter Book in PDF, Epub and Kindle

Learn how to secure your system and implement QoS using real-world scenarios for networks of all sizes.