It Delivers

Despite a number of introductory chapters, there is not much fluff in here. It provides a sound treatment of architectural issues before getting down to business with netfilter and iptables. It touches on some diagnostics techniques and tools before dealing with firewall configurations that are specific to popular services. This is a very useful book for firewall administrators. The index could be better, but I've been able to find what I needed.

Chapters in this 360 page volume include:
-Introduction
-Getting Started
-Local Firewall Security
-Troubleshooting Methodology
-The OSI Model
-netfilter and iptables Overview
-Using iptables
-A Tour of Our Collective Toolbox
-Diagnostics
-Testing Your Firewall Rules for Security
-Layer 2/Inline Filtering
-NAT and IP Forwarding
-General IP
-SMTP
-Web Services
-File Services
-Instant Messaging
-DNS/DHCP
-VPNs

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