Logs from wireless routers disclosing L2/MAC info?

Brian McKee brian.mckee at gmail.com
Thu Jan 15 16:37:49 UTC 2009

On Thu, Jan 15, 2009 at 7:11 AM, John Conover <conover at rahul.net> wrote:
> Some of the popular wireless routers have an option to email
> access/security logs to an account on the Internet. When enabled, the
> logs contain the last 24 bits of the MAC address of the router's cable
> modem port, (the rest could be guessed since the brand name is
> included in the email,) and, the MAC address of the cable modem's
> router port.
> Isn't this risky.

How exactly?  What does knowing the MAC address get anybody?

If this is the MAC address of the WAN side of the router, then your
ISP knows it, and anybody else on that subnet knows it.  Dunno what
they'd ever do with it, and nobody outside of the LAN can do anything
with it.

On the wireless side, it's sprayed across the countryside...

I don't get what your concern is.


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