Advanced open source tool for bypassing DPI-based censorship
Cross-platform multi-protocol VPN software
A dead simple VPN
Intelligently block brute-force attacks by aggregating system logs
Manage port forwardings via UPnP
Robust and flexible VPN network tunnelling
Proxy Cache and Web filtering Appliance
pfck - pf check - organizes flow information by host
SSH Java client GUI for Unix, Linux administration and monitoring
IOSec Addons are enhancements for web security and crawler detection
Lomalarga is a VPN-like service based on SSH and Linux.