OpenSnitch is a GNU/Linux port of the Little Snitch firewall
Simple tool to configure Windows Filtering Platform (WFP)
A simple way to block access to the internet per app
Manage port forwardings via UPnP
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
Blocking and monitoring of network traffic based on geography.
Programmable completion code (bash) for ip[6]tables (netfilter.org)
upnp port opener
pfck - pf check - organizes flow information by host
Jateway is a general purpose TCP/IP connection proxy
KnockIt! is a port Knocking tool for MAC OSX
ddos_deflate, el Guapo Edition is network trench defense!
Server and Client applications for testing network connectivity.