Stephane Russell posted on users@ asking for opinions on using commodity gateways (Linksys devices, etc) vs. DragonFly for a firewall and network gateway device.
Link summation time!Â Those gateway devices can run open-source operating systems – most famously the Linksys WRT54G. However, they can be problematic, though “Tomato” was recommended, as was OpenWRT. For read-only security, you can also boot from CD, as Dave Hayes does.
Matthew Dillon pointed out a small device that boots an free OS is all you need, which leads to stores selling my personal fascination: teeny computer systems. Michael Neumann listed favorites pcengines.ch and soekris.com, and Thomas Donnelly added Logic Supply.