<apngss@yahoo.com> wrote in message
news:1128955345.277201.277310@g49g2000cwa.googlegr oups.com...
>I have couple questions regarding MAC address changes:
>
> 1) When we change the MAC address, it will change the firmware of NIC,
> or just temporary change?
> My observation is just temporary change.
Temporary.
>
> 2) Do you think changing MAC address can secure the machine more? I
> mean at least hackers
> cannot keep track on the machines that easily? Well, maybe hackers
> should use IP address,
> but my observation is that when I change the MAC address, IP address
> will change as well.
No, I don't see how just changing the MAC address makes much difference.
Since the ISP only controls a range of IP addresses, all a hacker needs to
do is ping everyone of them, and try to penetrate those that respond. This
method would work whether you changed the MAC address or not.
>
> 3) I try it myself, when I change the MAC address, it will change the
> IP address as well.
> IP address is assigned by ISP, maybe ISP assigns the IP address based
> on the MAC address
> of the machine as well? MAC address identifies the network card, and IP
> address identifies
> the computer on the internet.
Perhaps they do. However, this is merely security by obscurity.
Jim
>
> Please advise. thanks!!
>