I want to change the mac address of my ethernet adapter. Is this possible?
If so, how or does anybody know a good HOW TO to do this? I use Redhat
Linux 9.0.
Thanks a lot !!
Thomas
MAC addresses are assigned as a permanent setting by the manufacturer.
I would assume that there is a way to change this as most/all things are
"hackable" but it is not an intended practice.
So the questions is why change it? MAC addresses are meant to make all
devices have a unique ID to be addressed by. Changing it gives you no
gains.
Because many cable operators grant access for a user account via a MAC
address (they log the MAC at initial connection / account setup). The
Linksys (didn't Cisco recently buy them) residential gateways offer this
feature - just type in the MAC address that your directly connected PC had
and the cable operator simply thinks your PC / single use device is
connected and allows the flow. Some cable operators (DSL too??) have a web
screen where you can change the allowed MAC address of your account - but
you need your user ID's / account #'s / passwords as well. MAC address
spoofing is often much simpler.
> Steve Robbins <srob...@no.spam.charter.net> wrote:
>
> Because many cable operators grant access for a user account via a MAC
> address (they log the MAC at initial connection / account setup). The
> Linksys (didn't Cisco recently buy them) residential gateways offer this
> feature - just type in the MAC address that your directly connected PC
> had and the cable operator simply thinks your PC / single use device is
> connected and allows the flow. Some cable operators (DSL too??) have a
> web screen where you can change the allowed MAC address of your account
> - but you need your user ID's / account #'s / passwords as well. MAC
> address spoofing is often much simpler.
Ah... good way to steal services too, eh? Not that you would do that,
of'course.
--
David Means
Never frobnicate without first grokking.
Found this little blurb on Google Groups, but haven't verified yet.
Seems simple enough. This was the response to someone asking about RH 8, but
I imagine it would still work the same in RH 9.
######################################################
Just edit
/etc/sysconfig/network-scripts/ifcfg-eth0 (assuming it's your eth0 network
card that you want to change the MAC for), and add a line like this:
MACADDR=AA:BB:CC:DD:EE:FF
(Obviously you want to substitute the MAC address you want in place of
AA:BB:CC:DD:EE:FF ;-)
Then "/sbin/ifdown eth0", "/sbin/ifup eth0", and you should be up and
running
with the new MAC address. You can use "/sbin/ifconfig eth0" to verify that
the new MAC address is in effect -- it shows up in the 'HWaddr' entry on the
first line that ifconfig
prints.###################################################### -V