*Note:
A device without WEP turned on allows anyone to connect to that device
and have as much access as that device allows. For example, if the wireless
device is an access point with an Internet connection, then it is broadcasting
a free Internet connection to anyone with a wireless card. There are Internet
caf?©s, airports, and so forth that have WEP turned off but that have a connectionspecific
screen that all users will see when attempting to connect to the
Internet.
*Note:
A bigger concern than free Internet is when wireless devices allow unauthorized
connectivity to computers without the intent of the computer??™s owner.
From your computer??™s wireless card configuration screen, change the SSID
name to one of the
Encryption Off
devices located by NetStumbler. In this
example the wireless device with the SSID of
"linksys"
was used. You may
receive a warning about connecting to an unsecured wireless device. If so,
click
Yes
.
Wireless
517
To verify the connection bring up a
Command
shell, and then type
ipconfig
and press
Enter
.
Notice that this wireless device handed out an IP address to my computer.
Now I want to check to see if I have a free Internet connection by opening
my Internet Explorer.
518
Practical Hacking Techniques and Countermeasures
Everything looks good so far. But what about other computers on the
network? Many times home users who have unsecured access points also have
unsecured home computers.
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