When selecting a wireless router, I consider whether the home-owner needs features like VPN pass thru to reach a VPN gateway at the office, support for challenging applications, or to host external servers - for example, a personal web server. I tend to prefer wireless routers with more advanced firewalling features if cost is not an over-riding concern. I always recommend installing personal firewall software on all desktops and laptops anyway, and of course AV software.
Finally, I enable all relevant security features on the wireless router - at minimum, a good SSID, shared key authentication and WEP with static keys, and MAC access control lists. I configure a strong admin password, enable secure admin, and limit admin access to Ethernet (and specifically, the desktop PC) where possible. I configure the wireless router's firewall with the most conservative rules that I can, while still meeting the owner's needs. As WPA upgrades become available, I will definitely recommend installing them and using WPA instead of WEP whenever possible.
When I'm done, I take one last walk around the house with a laptop or wireless LAN analyzer to see where deadspots are and where significant signal leakage or interference occurs. If I've placed the wireless router well in the first place, that's it. Otherwise, I adjust placement and/or tune configuration until everyone is happy.
Dig Deeper on Wireless LAN (WLAN)
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