LuLu is the free open-source macOS firewall
Firewall able to analyze visitor behavior & provide adapted response
Next Generation Open Source Firewall
CacheGuard Gateway is a UTM, a WAF, and a QoS management appliance.
Firewall log analyzer
Robust and flexible VPN network tunnelling
pfck - pf check - organizes flow information by host
IOSec Addons are enhancements for web security and crawler detection
Detect Flooder IPs, Reduce Attack Surface against HTTP Flood Attacks