I'm considering putting OpenBSD on a netbook for use as a firewall. I am entertaining the idea of using a netbook because it has a built-in screen and keyboard, built-in battery backup, and a relatively small physical footprint. The firewall will be for a small office (i.e. <20 computers).
I'd like to know what drawbacks there are to using a netbook as an OpenBSD firewall -- and what alternatives I might wish to consider. One apparent drawback is that netbooks rarely (if ever?) have two ethernet ports, so a USB-Ethernet adapter will be required. What other pros/cons/issues ought to be considered when looking at an OpenBSD netbook firewall?
Thanks for reading. I'm grateful for your thoughts, and look forward to reading your feedback.