An embedded FreeBSD-based firewall software product that was first developed by Manuel Kasper in 2002. It runs on almost any x86-based PC with a Pentium-compatible processor, at least 64 MB of RAM and at least two supported network controllers. No hard disk is required; a USB flash drive or even a CD-ROM plus a floppy disk (for very old machines) suffice. The most recent releases of m0n0wall have updated the base system to FreeBSD 6, improved support for new WLAN cards as well as WPA, SIP proxy, and also supports ISPsec tunnels to dynamic endpoints.
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