Free UTM appliance: firewall, VPN, WAF and antivirus in one ISO.
A network security analysis and monitoring toolkit Linux distribution.
Anti Spam SMTP Gateway
Image of OpenWrt OS, with snort community featured in.
Count the number of people around you by monitoring wifi signals
Open Source SIEM
High interaction honeypot solution for Linux based systems
Automated Bitcoin mining monitor and up-time enforcer
A simple TCP/UDP Port Flooder written in Python.