I'm working on modernizing an office network, and looking to upgrade them from a unix server with serial terminals to a unix server with windows terminals over ethernet and wireless, with a DSL connection available to all the Windows and the unix box.

I would like to add a few roaming laptops to the system, and this should be very possible with 802.11b, except that its security is almost non existant. Is there any way short of using a linux PC as a firewall to really Do This Right?

Matthew