LuLu is the free open-source macOS firewall
Firewall able to analyze visitor behavior & provide adapted response
Intelligently block brute-force attacks by aggregating system logs
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
Anti Spam SMTP Gateway
OpenBSD based firewall distribution
Add rule to windows firewall to block inbound and outbound traffic
A simple, portable port scanner
Blocking and monitoring of network traffic based on geography.
One of the most advanced DNS Proxy and DNS Firewall in one product.
ipset set listing wrapper script
LumoGate is a Windows Wifi Hotspot Management Software
A powerful network security tool, easy, safe and totally free.
Provisions Simple Secure Network Firewall/Router
Powerfull Web Application Firewall for PHP
Programmable completion code (bash) for ip[6]tables (netfilter.org)
Webinterface to (un)ban IPs in Fail2Ban
Network Firewall Linux Kernel Module with Conflict Resolution Engine
Open source voucher management / hotspot system