Is my wireless net being hacked?

I have the MS wireless base station (870 g). I currently
run an wireless card on my laptop. I use mac ID filtering
and only allow access to the two puters on my net. When I
refresh the ms broadband window, it shows a name different
from what I have named my computers. However it shows the
correct IP address. when I click on the device on my
network, I cannot access it. Is my network being
invaded? If so, other than using WEP or WPa security, how
do I prevent these other people from using my internet
connection and accessing my netowrk?

 

Read the articles by Barb about securing your wireless network.

http://www.microsoft.com/windowsxp/expertzone/meetexperts/bowman.mspx

Since I've never heard of a 870 I have no clue what hardware you are
running. For the 802.11g hardware, Microsoft only had the following
models MN-700, MN-710, MN-720, & MN-730.

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