OWASP Coraza WAF is a golang modsecurity compatible firewall library
Intelligently block brute-force attacks by aggregating system logs
Manage port forwardings via UPnP
Robust and flexible VPN network tunnelling
Firewall log analyzer
A java PCAP and DPI library
A simple, portable port scanner
OWASP ModSecurity Core Rule Set (CRS) Project
blocklists for openbsd,freebsd,linux,iptables,bsd pf,pf,ipfilter
Prevent and Protect Your HTML5 Video, Music , Audio From Download Free
360-FAAR Analyze FW1 Cisco Netscreen Policy Offline Using Config/Logs
Open source voucher management / hotspot system
Extract and Convert Juniper Firewall Policies to CSV
Linux firewall distribution geared towards home and SOHO users.
pfck - pf check - organizes flow information by host
IOSec Addons are enhancements for web security and crawler detection
This tool locks down Linux and UNIX systems.