CacheGuard Gateway is a UTM, a WAF, and a QoS management appliance.
IPFIRE Firewall for ARM architecture (OrangePi)
An iptables IPv4 firewall and traffic shaping program
A powerful network security tool, easy, safe and totally free.
PeerGuardian - a privacy oriented firewall application
A client for the MikroTik RouterOS API protocol, written in PHP.
ngx_lua_waf
IOSec Addons are enhancements for web security and crawler detection
Personal firewall for linux desktop and android phone
Detect Flooder IPs, Reduce Attack Surface against HTTP Flood Attacks