Free Open Source Security Tools: A Practical Guide to Security Applications

Written with the harried IT manager in mind, Open Source Security Tools is a practical, hands-on introduction to open source security tools. Seasoned security expert Tony Howlett has reviewed the overwhelming assortment of these free and low-cost solutions to provide you with the “best of breed” for all major areas of information security.

Inside, you'll find everything from how to harden Linux and Windows systems to how to investigate breaches with Sleuth Kit, Autopsy Forensic Browser, and Forensic Tool Kit. For each security task described, the author reviews the best open source tools and how to use them and also provides a case study and sample implementation. Covered tasks include:

Installing an open source firewall using Ipchains, Iptables, Turtle firewall, or Smoothwall
Scanning ports and testing for vulnerabilities
Using Nmap, Nlog, Nmap for Windows, Nessus,and NessusWX
Using sniffers and network-intrusion systems, including Tcpdump, Ethereal, Windump, Snort™, and Snort™ for Windows
Tracking and analyzing collected data with Swatch, ACID, and NCC
Encrypting communications with PGP, GnuPG, SSH, and Free S/WAN