Nikto web server scanner

NAT Slipstreaming allows an attacker to remotely access any TCP/UDP services bound to a victim machine, bypassing the victim’s NAT/firewall, just by anyone on the victim's network visiting a website

Authentication, authorization, traceability and auditability for SSH accesses.

Monitorix is a free, open source, lightweight system monitoring tool.

Pulled Pork for Snort and Suricata rule management (from Google code)

Collection of standard plugins to discover and gather cloud-to-edge metrics and status across your whole IT infrastructure.