Network Security Appliance Linux Distribution
Next Generation Open Source Firewall
Firewall log analyzer
Anti Spam SMTP Gateway
blocklists for openbsd,freebsd,linux,iptables,bsd pf,pf,ipfilter
Webinterface to (un)ban IPs in Fail2Ban
Open source voucher management / hotspot system
IOSec Addons are enhancements for web security and crawler detection
Easy to use firewall for linux beginners.
Detect Flooder IPs, Reduce Attack Surface against HTTP Flood Attacks
Lomalarga is a VPN-like service based on SSH and Linux.