The Security Onion LiveCD is a bootable CD that contains software used for installing, configuring, and testing intrusion detection systems.
The Security Onion LiveCD is based on Xubuntu 9.04 and contains Snort 184.108.40.206, Snort 3.0.0b3 (Beta), sguil, idswakeup, nmap, metasploit, scapy, hping, fragroute, fragrouter, netcat, paketto, tcpreplay, and many other security tools.
The Security Onion LiveCD is intended for intrusion detection. Simply boot the CD and double-click either the Snort-Sguil or SnortSP-Sguil desktop shortcuts. The Snort and Sguil daemons will then start, listening on eth0 for any suspicious traffic and creating alerts in the Sguil console.
It can also be used to test an IDS. Simply boot the CD and use the included tools (such as nmap, metasploit, idswakeup, scapy, hping, and others) to test your existing IDS or to test the included Snort 220.127.116.11 and Snort 3.0 Beta 3.
You can also use it to install an IDS. Simply boot the CD and double-click the Install desktop shortcut.