Obtaining Ethernet addresses?

[se at panix.com (Scott Ehrlich)]

Hello Kris:

I am actually looking for a way to read/get the MAC address, not the IP.
Thanks though for what you did provide.

Scott

On Mon, 6 Nov 2000, Kris wrote:

> Well since i use to work for mediaone and know lots about cable modems...
> Also I am assuming you want the IP address(the MAC should be on the bottom
> of the modem).
> 
> First you have to MIB walk the headend.
> snmpwalk 10.l47.82.1 public |more
> (       replace x.147.82.1 with your IP gateway         )
> 
> You're looking for something like this:
> at.atTable.atEntry.atPhysAddress.1.1.10.147.83.13 =  Hex: 00 00 CA 07 FB
> 22 
> at.atTable.atEntry.atNetAddress.1.1.10.147.83.13 = IpAddress: 10.147.83.13
> Grep for your cable modem's MAC, there is an ARP entry in the headend
> for it's IP address as well(the MAC is on the bottom of the modem).
> Now you can MIB walk your cable modem or gather stats to your heart's
> content.
> Everytime you get renumbered though your modem will get renumbered too. 
> 
> If your doing this for the arp/bandwith uncap hack(first off it only works
> with LanCity type cable modems from mediaone), don't bother m1 has figured
> a way to block that(but I have a way to get around it as well e-mail me
> for info ;).
> 
> Thanx to Bill McDonough for some of this info
> 
> Kris Loranger
> Network Systems Engineer and Security Consultant
> Belenosinc.com
> kris at kancer.978.org
> IRC:undernet,#978,Kancer AIM:KancerKris
> Run Linux, keep the net free!
> 
> On Mon, 6 Nov 2000, Scott Ehrlich wrote:
> 
> > Hello to all:
> > 
> > I wish to remotely obtain the Ethernet address of my cable modem which is
> > attached to the Ethernet card of my OpenBSD box.  What utility is
> > recommended for this task?   I presume it will be some type of network
> > sniffer.
> > 
> > Thanks.
> > 
> > Scott
> > 
> > -
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> 
> 

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