Firewall log analyzer
Intelligently block brute-force attacks by aggregating system logs
Next Generation Open Source Firewall
Network Security Appliance Linux Distribution
Free UTM appliance: firewall, VPN, WAF and antivirus in one ISO.
Anti Spam SMTP Gateway
Tool to ping hosts through firewalls blocking ICMP
A java PCAP and DPI library
A simple, portable port scanner
ipset set listing wrapper script
Powerfull Web Application Firewall for PHP
A client for the MikroTik RouterOS API protocol, written in PHP.
Webinterface to (un)ban IPs in Fail2Ban
track log files, block intrusions, and much more
Open source voucher management / hotspot system
bash programmable completion for conntrack-tools (netfilter.org)
network control and reporting
IOSec Addons are enhancements for web security and crawler detection
IoT Device, Gateway, Server platform