http://eracks.com/products/General%20Purpose%20Systems/config?sku=VALUE#PCI Slot

"eRacks recommends OpenBSD operating system for all firewall systems, 
because OpenBSD was written and designed from the ground up with
security in mind."

heheh.

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Beheading servers since 1999 -- The PC Weasel! http://www.realweasel.com