3i-Infotech

Details of the Audit Tools

Freeware

1. Nessus - Remote security scanner

2. Snort - Network intrusion prevention and detection system

3. Netcat - A simple Unix utility which reads and writes data across network connections, using TCP or UDP protocol

Commercial

1. Retina - Retina's function is to scan all the hosts on a network and report on any vulnerability found.