I have a bunch of friends who use a
wireless router (on a DSL line) to access the Internet
when at a
timeshare. It's a Linksys WRT54G, configured with no password, no encyrption, and the network's name is still Linksys.
How dangerous is that, in reality?
This is in a rural but not
"isolated" setting, with a few houses nearby.
The place has a permanent computer, and friends bring their notebooks.
I've suggested the router should be configured to WPA, with a simple password and unique network name, but nobody thinks it's necessary. They say, "The router has a firewall, and besides we all have antivirus programs of one brand or another. And if someone sits in our driveway and uses the Internet for awhile, so what?"
I'll grant that ease of connection and compatibility are important, and there's nothing at all worth swiping from the place's own computer. It's the other connected computers' security
that concerns me, and possibly someone planting a worm or something on the main box.