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.

Customer Reviews & Comments
This review is from: Linux Firewalls (New Riders Professional Library) (Textbook Binding) I looked at both this book and the "Linux and OpenBSD Firewall" books before deciding on this one. This book does a much more exhaustive job of explaining how to build a linux firewall. Going beyond just telling you "here's what you want your firewall script to look like" which is what I felt the other book did, this title explains why you shouldn't have certain daemons running on the firewall, what ports to block and the possible consequences and attack types that can come from not blocking a specific port. Amusingly enough, it even tells you the port to leave open if you plan on running a Quake server. As pointed out below, the wrap around on some of the examples is annoying. The book also is dedicated to handling the threat from the outside, it does not deal with the internel threat that any company needs to guard against, though it is pointed out in the very beginning that this book isn't designed to deal with internal threats, so I don't see this as a negative. I found the book easy to read. There are some technical books you dread picking up since they are so stale, this fortunately I found not to be like that. The entire book is dedicated to firewalls. Some firewall books I have seen a good chunk of the book is choosing hardware and how to install the OS. The author of this book intelligently reasoned that his readers already have Linux installed and want a book on firewalls, not a how to install the OS. Comment | Permalink | (Report this)