Quick questions about MAC addresses..


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Hello everyone,

I have a quick question. Do MAC addresses change? I mean, are the addresses branded to a network card? or can they change like a dynamic IP address?

The reason I am asking is because I enable MAC filtering on my router to block a particular individual from access the NET. If they reboot, will their MAC address change? Is there anyway for them to circumvent my block?

I had them blocked by IP address, but LAN IP addresses seem to change.

Thanks.

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They are usually permanent, hard codded to the card. There is software available to change a MAC address and some cards allow you to change via the Device Manager.

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You are pretty safe with what you are doing (BLocking by MAC Address) because most people don't know how to change their MAC address. Put a Username and password Authentication on top of that and you should be fine.

Have fun.

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