Linux Firewalls (New Riders Professional Library)

If you are a system or network administrator, then you're concerned about security. If you're concerned about security, then you will want a copy of "Linux Firewalls" handy. In spite of its title, "Linux Firewalls" is about more than just firewalling. After introductory material about firewalls, and how packet-filtering firewalls work, Suehring and Ziegler dive into creating firewalls with iptables: Enabling services, blocking... Read Full Review

I have used ipfilter on FreeBSD for many years, and I'm now starting to deploy Linux. Ziegler presents an extremely well researched book. Particularly impressive is his discussion of the nastier protocols like DHCP and FTP. Getting ssh and smtp through a firewall is pretty simple, it's the tougher protocols that really require some thought, and it's clear he's done that.Along with explaining the protocols, he explains how... Read Full Review

I recommend this book to both linux and non-linux users alike. the non-linux users will learn plenty through the exquisite TCP/IP details of network trickery, policy creation, and lock down methods.Linux users will be even better off, as they can use the sample configurations and setups right off the bat. This second edition covers iptables in a readable manner unlike any other source. This is the only firewalls book a... Read Full Review

If you are responsible for a small Linux network, whether it be at home or work, with an always-on high-speed Internet connection, and you are not already a firewall expert, this is the first book you should read. Mr Ziegler starts off by explaining the "why's" (theory) and then proceeds to demonstrate the "how's" (practice): all in a common-sense and easily understood manner.The author's website contains an additional wealth... Read Full Review

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... Read Full Review