Linux Firewalls: Attack Detection and Response - Softcover

Reseña del editor

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:

Biografía del autor

Michael Rash is a Security Architect on the Dragon Intrusion DetectionSystem with Enterasys Networks, Inc., and is a frequent contributor toopen source projects. As the creator of psad, fwknop, and fwsnort, Rashis an expert on firewalls, IDSs, OS fingerprinting, and the Snort ruleslanguage. He is co-author of the book Snort 2.1 Intrusion Detection,lead-author and technical editor of the book Intrusion Prevention andActive Response, and has written security articles for Linux Journal,SysAdmin, and ;login:.