OpenSnitch is a GNU/Linux port of the Little Snitch firewall
Anti Spam SMTP Gateway
Free UTM appliance: firewall, VPN, WAF and antivirus in one ISO.
Generació regles IPTables per Continents o Països
Tool to ping hosts through firewalls blocking ICMP
Network Firewall Linux Kernel Module with Conflict Resolution Engine
track log files, block intrusions, and much more
ngx_lua_waf
High interaction honeypot solution for Linux based systems
Detect Flooder IPs, Reduce Attack Surface against HTTP Flood Attacks