Trinux is a small ramdisk/floppy based Linux distribution that contains useful tools for mapping and monitoring TCP/IP networks (i.e. intrusion detection and vulnerability scanning)
RAMdisk-based Operating System for conducting Security Audits. Includes hping2, xprobe, netcat, lsh, wardialer, and more -- all on 1 computer disk. Runs off your RAM, so there is no need to reformat your computer. Great for pen testing!