OpenSnitch is a GNU/Linux port of the Little Snitch firewall
Manage port forwardings via UPnP
Intelligently block brute-force attacks by aggregating system logs
Robust and flexible VPN network tunnelling
OpenWRT ©VMWare ©ESXi Appliance NAT router
Tool to ping hosts through firewalls blocking ICMP
Simple UDP port cheker
A simple, portable port scanner
OWASP ModSecurity Core Rule Set (CRS) Project
Programmable completion code (bash) for ip[6]tables (netfilter.org)
upnp port opener
Programmable completion code (bash) for ipset (netfilter.org)
pfck - pf check - organizes flow information by host
Jateway is a general purpose TCP/IP connection proxy
ddos_deflate, el Guapo Edition is network trench defense!
Detect Flooder IPs, Reduce Attack Surface against HTTP Flood Attacks