Obtaining Ethernet addresses?

[Niall Kavanagh]

# cat /proc/net/arp

?

On Mon, 6 Nov 2000, Scott Ehrlich wrote:

> 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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--
Niall Kavanagh, niall at kst.com
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