Obtaining Ethernet addresses?

[se at panix.com (Scott Ehrlich)]

I will stop cluttering the list's queue with my pursuit after this
message, but I don't believe the response addresses my quest -

It will give me the MAC address of the Ethernet card in the system, but I
don't see how it gives me the MAC address of the cable modem connected to
the PC's Ethernet card.    

If I am missing something here, please let me know.

Let's take this offline, unless others on the list find this of value...

Scott

On Mon, 6 Nov 2000, Gordon Keegan wrote:

> 
> >
> > I am actually looking for a way to read/get the MAC address, not the IP.
> > Thanks though for what you did provide.
> > 
> > Scott
> > 
> 
> Ummm, guess what? :)  That's exactly what Kris gave you.  Look closer
> at the "at.atTable.atEntry.atPhysAddress" line versus the
> "at.atTable.atEntry.atNetAddress" line...
> 
> Gordon
> 
> >>> 
> >>> 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
> >>>
> 
> 
> 
> > 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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> > 
> 
> 

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