Next Generation Open Source Firewall
Full-featured enterprise network management tool
enum4Linux is a Linux alternative to enum.exe for enumerating data
OWASP ModSecurity Core Rule Set (CRS) Project
Performance monitoring and logging software for Linux and Windows.
Open Source Enterprise Wiki and Web Application Platform
360-FAAR Analyze FW1 Cisco Netscreen Policy Offline Using Config/Logs
Track your ARP/MAC table changes and so much more
Open Source SIEM
Extract and Convert Juniper Firewall Policies to CSV
pfck - pf check - organizes flow information by host
MitM pentesting opensource toolkit
Various TCP/IP servers, clients and network management tools
IOSec Addons are enhancements for web security and crawler detection
Perl implementation of a SCAP benchmark tool