floppyfw was a Linux distribution running BusyBox to provide a firewall/gateway/router on a single bootable floppy disk, but was later available in CD format.-
Reviews concluded that it was a very simple and reliable gateway/firewall that could be established on small to medium-sized networks at low cost and with ease. One independent study concluded that it was the " best possible security provided by a floppy-based firewall" for the repurposing of old, redundant hardware into Linux-based firewalls or routers.
Requirements Intel 80386SX or better two network interface cards 1.44MB floppy drive 12MByte of RAM
Features Floppyfw's features include: Access lists IP-masquerading (network address translation) Connection tracked packet filtering Quite advanced routing Traffic shaping PPPoE Very simple packaging system. Is used for editors, PPP, VPN, traffic shaping and whatever comes up Logging through klogd/syslogd, both local and remote Serial support for console over serial port DHCP server and DNS cache for internal networks
References
External links floppyfw main web page