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garethccc

join:2011-08-24

Very (very) weird situation involving WPA!

Hi all,

I share a broadband internet connection with my housemate via Wi-Fi and initially set it up to use WPA2 authentication. I then bought a Kindle 3, which can't handle WPA2, so I had to change the authentication to WPA (TKIP). I changed the password and SSID at the same time. This was all done while my housemate was away for a couple of weeks. He had taken his computer with him.

He came back today and his computer automatically connected to our wireless network without him knowing that the authentication method, password and SSID had all been changed while he was away! I am completely dumbfounded. How could this possibly happen?

Can someone please shed some light on this bizarre situation for me?


Cudni
La Merma - Vigilado
Premium,MVM
join:2003-12-20
Someshire
kudos:13
Can you see his connection on the router? He can't connect without wpa passcode.

Cudni

garethccc

join:2011-08-24
I sat next to him and watched him surf the net! It's straight up, just as I explained. It shouldn't be possible but it happened. Hopefully a pro with a very solid understanding of wireless networking reads my post! Otherwise this will simply remain a mystery.

He did not know the password. It had never been entered on his computer - the computer just *knew*... I looked at his wireless network settings and the correct password was stored for our network. I would have thought this impossible if I hadn't seen it with my own eyes.


Cudni
La Merma - Vigilado
Premium,MVM
join:2003-12-20
Someshire
kudos:13
so you didn't check if his connection appear on the router. however mysterious you might think event is in reality there is a mundane explanation, one that in no way includes him connecting without correct code.
--
"what we know we know the same, what we don't know, we don't know it differently."
Help yourself so God can help you.
Microsoft MVP, 2006 - 2011/12


DaMaGeINC
The Lan Man
Premium
join:2002-06-08
Greenville, SC
kudos:2
reply to garethccc
Do you use a default SSID? Maybe hes connecting to your neighbor with the same SSID....
--
Hating ignorance since 1984.

lutful
... of ideas
Premium
join:2005-06-16
Ottawa, ON
kudos:1
reply to garethccc
said by garethccc:

I looked at his wireless network settings and the correct password was stored for our network. I would have thought this impossible if I hadn't seen it with my own eyes.

Any password is replaced with a series of dots or asterisks in any respectable operating system. Can you post a screenshot of what you are talking about?

Anyway did you have to change the password on your own computer to access the internet? If yes, someone had to do the exact same on his computer. If no, your router has a mode which does not need a password.