Re: [dylug] Networking question

NITIN chandnani wrote:
> hi
> i dont think u can spoof mac addresses
> u can only spoof IP addresses...

Yup, you can spoof MAC! Atleast on Linux. Don't know about other OSs but if you can do it on Linux, you should be able to do on
other OSs.
More here:
http://whoozoo.co.uk/mac-spoof-linux.htm
http://axljab.homelinux.org/MAC_address_spoofing

> --- abhijit deodhar <[email protected]> wrote:
> 
>>Hi guys,
>>
>>Thanks for the replies.
>>
>>One more question.
>>As pointed by Amit Gud, we can spoof MAC addresses.
>>So in that case can we have a single NIC with 2
>>addresses (one original and other spoofed).
>>If so, will the mac respond to queries for both
>>addresses?

MAC address is for the interface, i.e. the NIC and is provided by the vendor and supposed to be unique. So with one NIC, IMO,
you won't be able to have 2 MACs (atleast not in userspace, in the kernel you might be able to do such a thing).

>>If yes, then we can as well have a subnet of MAC
>>addresses similar to IP subnets assuming we assign
>>spoofed address in a specific logical sequence?
>>

Yes you _can_ build a MAC-aware application and have a LAN where each node is running that application and is recognized only
by its MAC and not by its IP and communicates through 802.3.


regs,
AG