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Linux Firewalls

Author: Michael Rash
Publisher: No Starch Press
ISBN: 1593271417
Size: 12.58 MB
Format: PDF, Mobi
View: 514
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Addressing the firewall capabilities of Linux, a handbook for security professionals describes the Netfilter infrastruction in the Linux kernel and explains how to use Netfilter as an intrusion detection system by integrating it with custom open source software and Snort rulesets, discussin such topics as Linux firewall log analysis and policies, passive network authentication and authorization, and more. Original. (Intermediate)

Linux Iptables Pocket Reference

Author: Gregor N. Purdy
Publisher: "O'Reilly Media, Inc."
ISBN: 9781449378981
Size: 38.91 MB
Format: PDF, Kindle
View: 1048
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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.

Red Hat Linux Firewalls

Author: Bill McCarty
Publisher: *Red Hat
ISBN: 9780764524639
Size: 71.41 MB
Format: PDF
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* 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.

Linux Firewalls

Author: Steve Suehring
Publisher: Addison-Wesley Professional
ISBN: 0134000196
Size: 30.67 MB
Format: PDF, ePub
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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

Squid The Definitive Guide

Author: Duane Wessels
Publisher: "O'Reilly Media, Inc."
ISBN: 9780596550530
Size: 31.83 MB
Format: PDF, Kindle
View: 1435
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Squid is the most popular Web caching software in use today, and it works on a variety of platforms including Linux, FreeBSD, and Windows. Squid improves network performance by reducing the amount of bandwidth used when surfing the Web. It makes web pages load faster and can even reduce the load on your web server. By caching and reusing popular web content, Squid allows you to get by with smaller network connections. It also protects the host on your internal network by acting as a firewall and proxying your internal web traffic. You can use Squid to collect statistics about the traffic on your network, prevent users from visiting inappropriate web sites at work or school, ensure that only authorized users can surf the Internet, and enhance your privacy by filtering sensitive information from web requests. Companies, schools, libraries, and organizations that use web-caching proxies can look forward to a multitude of benefits.Written by Duane Wessels, the creator of Squid, Squid: The Definitive Guide will help you configure and tune Squid for your particular situation. Newcomers to Squid will learn how to download, compile, and install code. Seasoned users of Squid will be interested in the later chapters, which tackle advanced topics such as high-performance storage options, rewriting requests, HTTP server acceleration, monitoring, debugging, and troubleshooting Squid.Topics covered include: Compiling and installing Squid Running Squid Using Squid's sophisticated access controls Tuning disk storage for optimal performance Configuring your operating system for HTTP interception Forwarding Requests to other web caches Using redirectors to rewrite user requests Monitoring Squid with the cache manager and SNMP Using Squid to accelerate and protect HTTP servers Managing bandwidth consumption with Delay Pools

Load Balancing Servers Firewalls And Caches

Author: Chandra Kopparapu
Publisher: John Wiley & Sons
ISBN: 0471421286
Size: 14.40 MB
Format: PDF, Kindle
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From an industry insider--a close look at high-performance, end-to-end switching solutions Load balancers are fast becoming an indispensable solution for handling the huge traffic demands of the Web. Their ability to solve a multitude of network and server bottlenecks in the Internet age ranges from dramatic improvements in server farm scalability to removing the firewall as a network bottleneck. This book provides a detailed, up-to-date, technical discussion of this fast-growing, multibillion dollar market, covering the full spectrum of topics--from server and firewall load balancing to transparent cache switching to global server load balancing. In the process, the author delivers insight into the way new technologies are deployed in network infrastructure and how they work. Written by an industry expert who hails from a leading Web switch vendor, this book will help network and server administrators improve the scalability, availability, manageability, and security of their servers, firewalls, caches, and Web sites.

Backup Recovery

Author: Curtis Preston
Publisher: "O'Reilly Media, Inc."
ISBN: 0596102461
Size: 52.98 MB
Format: PDF, Mobi
View: 7489
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Packed with practical, affordable backup and recovery solutions for UNIX, Linux, Windows, and the Mac OS X system--as well as various databases--this new guide is a complete overhaul of the author's strong-selling "UNIX Backup & Recovery," now revised and expanded with over 40 percent new material.

The Computer And The Brain

Author: John von Neumann
Publisher: Yale University Press
ISBN: 0300181116
Size: 20.20 MB
Format: PDF, Kindle
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First published in 1958, John von Neumann's classic work "The Computer and the Brain" explored the analogies between computing machines and the living human brain. Von Neumann showed that the brain operates both digitally and analogically, but also has its own unique statistical language. And more than fifty years after its inception the "von Neumann architecture"--An organizational framework for computer design - still lies at the heart of today's machines. In his foreword to this new edition, Ray Kurzweil, a futurist famous for his own musings on the relationship between technology and consciousness, places von Neumann's work in a historical context and shows how it remains relevant today.

Snort 2 1 Intrusion Detection Second Edition

Author: Brian Caswell
Publisher: Elsevier
ISBN: 9780080480992
Size: 19.59 MB
Format: PDF, ePub, Docs
View: 5505
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Called "the leader in the Snort IDS book arms race" by Richard Bejtlich, top Amazon reviewer, this brand-new edition of the best-selling Snort book covers all the latest features of a major upgrade to the product and includes a bonus DVD with Snort 2.1 and other utilities. Written by the same lead engineers of the Snort Development team, this will be the first book available on the major upgrade from Snort 2 to Snort 2.1 (in this community, major upgrades are noted by .x and not by full number upgrades as in 2.0 to 3.0). Readers will be given invaluable insight into the code base of Snort, and in depth tutorials of complex installation, configuration, and troubleshooting scenarios. Snort has three primary uses: as a straight packet sniffer, a packet logger, or as a full-blown network intrusion detection system. It can perform protocol analysis, content searching/matching and can be used to detect a variety of attacks and probes. Snort uses a flexible rules language to describe traffic that it should collect or pass, a detection engine that utilizes a modular plug-in architecture, and a real-time alerting capability. A CD containing the latest version of Snort as well as other up-to-date Open Source security utilities will accompany the book. Snort is a powerful Network Intrusion Detection System that can provide enterprise wide sensors to protect your computer assets from both internal and external attack. * Completly updated and comprehensive coverage of snort 2.1 * Includes free CD with all the latest popular plug-ins * Provides step-by-step instruction for installing, configuring and troubleshooting

Practical Packet Analysis 3e

Author: Chris Sanders
Publisher: No Starch Press
ISBN: 1593278292
Size: 36.44 MB
Format: PDF, ePub
View: 1981
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It’s easy to capture packets with Wireshark, the world’s most popular network sniffer, whether off the wire or from the air. But how do you use those packets to understand what’s happening on your network? Updated to cover Wireshark 2.x, the third edition of Practical Packet Analysis will teach you to make sense of your packet captures so that you can better troubleshoot network problems. You’ll find added coverage of IPv6 and SMTP, a new chapter on the powerful command line packet analyzers tcpdump and TShark, and an appendix on how to read and reference packet values using a packet map. Practical Packet Analysis will show you how to: –Monitor your network in real time and tap live network communications –Build customized capture and display filters –Use packet analysis to troubleshoot and resolve common network problems, like loss of connectivity, DNS issues, and slow speeds –Explore modern exploits and malware at the packet level –Extract files sent across a network from packet captures –Graph traffic patterns to visualize the data flowing across your network –Use advanced Wireshark features to understand confusing captures –Build statistics and reports to help you better explain technical network information to non-techies No matter what your level of experience is, Practical Packet Analysis will show you how to use Wireshark to make sense of any network and get things done.