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Block unwanted devices

Last response: in Wireless Networking
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January 10, 2011 1:23:52 PM

I have a Linksys WRT54G router. I would like to only allow certain devices to connect to the router via wifi. Right now I am using the mac address filter to allow/disallow devices to connect. Is there a more efficient/easier way to do this? It's kind of a pain to find the mac address of certain devices that I want to add to the allow list.

Thanks,
Jordan

More about : block unwanted devices

Anonymous
January 10, 2011 1:34:25 PM

It's not too difficult to establish the MAC ID. Set up the Access List and then activate all the relevant devices -- they should then show up as wishing to be admitted. Alternatively most routers have a facility to show a list of Connected Devices which will include the MAC ID.
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January 10, 2011 1:56:24 PM

If you use strong security measures on your router and keep your passkey guarded there is no reason to use a MAC filter on your home network. Use WPA2-AES and take out the MAC filter. No one is breaking through that kind of security with a laptop. Not even an i7 desktop with a set of four Tesla GPUs brute forcing the crap out of the encrypted passkey could get the key in a reasonable amount of time (we're talking hundreds or thousands of years to brute force a strong password with AES encryption).



See also: http://en.wikipedia.org/wiki/Brute-force_attack

"A device that could check a billion billion (10^18) AES keys per second would in theory require about 3×10^51 years to exhaust the 256-bit key space."

That is, if your computer had the ability to check 10,000,000,000,000,000,000 passkeys in a second, running all the time at full capacity, it would take 10,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 years to go through every single possible key combination.
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January 10, 2011 2:53:04 PM

Yeah, forgot to mention that I'm using the mac filter because my son gives out the network key to the neighbors...
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January 10, 2011 5:23:46 PM

easy solution is change the network key and don't give it to your son.

you enter it in the devices that needed without your son seeing you typing.

make sure you change the admin password of the router so your son cannot look up the wireless passkey on the router.
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