Re: Router

"Reasonable" is a pretty subjective term with network security. There is the standard 802.11 encryption and a static key with is good for keeping nosy neighbors off your network but probably not effective against a really determined party (e.g. corporate espionage).

A good way to go is to secure the wireless computer to the LAN using a VPN server in addition to the built in encryption on the 802.11. Very easy to do using a [COUGH] Windows server, but I'm basically ignorant in the Linux arena. I believe there's also way using a RADIUS server with dynamic keys that is truly the most secure but I've never done it. I've also had better luck with the more expensive wireless devices rather than the el Cheapo consumer grade Linksys; some customers see the stuff in the Sunday paper and refuse to pay for the better quality equipment. I've had great luck with Strix Systems wireless, although it's quite expensive - http://www.strixsystems.com/ - I would think that Cisco or Proxim would also be a good bet. The Strix is made for commercial applications, banks, hospitals, that occupy multiple floors in buildings; users can roam freely over the entire wireless network, along with breaking it down into segments with multple SSIDs. They also have access points in which you install a second 802.11a radio and you can put in nodes with don't have to be attached to the wired network via ethernet, you can do Power-Over-Ethernet to forego the wall wart, lots of different things. Pretty fun stuff to work with.