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Wannabe Geek


#113613 22-Jan-2013 13:46
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Hey all, first time posting on my personal account, didn't want to do this from the business account :)

Im playing around with some security on my home network. I was going to try setup mac address filtering until I found out how easy it was to sniff a mac address then spoof it.

So I tried spoofing my mac address for the first time to see how easy it is to change. Ive used 2 programs so far to change it, the best of which is Technitium MAC Address changer.

This spoofs the mac address and resets the adapter, and makes it persistant (so when i restart my pc it starts with the spoofed mac address). IP config shows mac address changed/spoofed successfully

The only thing is once the address is spoofed I cannot connect to any wifi network.

I have 3 wifi routers at home, 2 netgears and a cisco linksys, All with WPA2-PSK tkip+aes - no mac address filtering at all on them just the key.

When i try to connect it will say unable to connect in a matter of a few seconds, the adapter status is always stuck on Attempting to Authenticate.

I have removed the networks from windows so it prompts for security key apon connection, changes nothing still unable to connect.

If I remove the spoofed address it connects to wifi straight away.

My laptop is using Windows 7 pro 64Bit, latest update.

The only thing I can think of, is that I've noticed when spoofing in windows 7 (and other people confirm) they cant change their mac address unless the second octet is a 2,6,A or D.
And my original wifi adapter the second octet is a 4.

Is there something in my NZ spec routers that realize the address isnt normal/not of this region and will not accept the authentication from the address?

Or is there some sort of spoof detection on modern series routers?

Ive looked around but most the threads with the same issues are linux which im yet to try.

 

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Ultimate Geek


  #766798 21-Feb-2013 07:32
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I would say it is a good thing you cannot connect with the device that has had its MAC address changed.

1332 posts

Uber Geek
Inactive user


  #767144 21-Feb-2013 15:30
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StevieT: I would say it is a good thing you cannot connect with the device that has had its MAC address changed.


Hardly the point of this post though.

OP, are you able to pick the MAC address you spoof it to? I'd try using one from a known working device on your network (after turning that device off first) and testing it. Then you'll know if it is an issue with your router or the software on your PC.

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