eugen at leitl.org
Fri Sep 9 12:02:23 UTC 2011
On Fri, Sep 09, 2011 at 01:43:13PM +0200, Andre Risling wrote:
> I've forgotten already if someone answered this....but with the
> free WiFi connections do they typically get your MAC address?
> I've noticed in Ubuntu that when the computer is booted up and before I
> connect to the web the computer needs the "keyring" password. No matter
> whether I try to change my mac address that stupid keyring thing won't
> let me do anything until it gets the "answer it wants". So the password
> is entered and the computer connects the web (actually just to the
> router to get the wireless signal) and then I change the MAC address.
> If I were trying to hide my mac address, no matter where I am, I have to
> assume my real mac address would go out over the web or to the router
> before I could change my address.
> Is that correct?
Your MAC, being an OSI Layer 2 feature, is not propagated
beyond the first router (unless you use IPv6, which
can embed MAC information within the /64 local part
of the address -- Tor doesn't do IPv6 yet) or malware
on your system sends that information).
Eugen* Leitl <a href="http://leitl.org">leitl</a> http://leitl.org
ICBM: 48.07100, 11.36820 http://www.ativel.com http://postbiota.org
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