North American Network Operators Group

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Re: wireless traffic

  • From: Spencer.Wood
  • Date: Fri Nov 09 11:38:16 2001

Cisco Access Points start out with 0040.96


************************************************************
Spencer Wood, Network Manager
Ohio Department Of Transportation
1320 Arthur E. Adams Drive
Columbus, Ohio 43221 
E-Mail: [email protected]
Phone: 614.387.0710/Fax: 815.361.0714/Pager: 866.591.9954 
************************************************************* 




"Steven M. Bellovin" <[email protected]>
Sent by: [email protected]
11/09/2001 11:29 AM

 
        To:     Andrew Brown <[email protected]>
        cc:     [email protected], Art Houle <[email protected]>, 
[email protected]
        Subject:        Re: wireless traffic



In message <[email protected]>, Andrew Brown 
writes:
>
>>> Does anybody know where I can locate a list of MAC address prefixes 
that
>>> belong specifically to wireless NIC cards?  I am looking for a method 
of
>>> discovering what devices on my network are wireless devices.
>>
>>Power down the wireless hub and see who calls? ;)
>>
>>Seriously though - your wireless hub/transmitter may have a queryable
>>arp table that will tell you what's not using the wire....
>
>i've used/seen cards with these prefixes:
>
> 00:e0:29 - smc
> 00:02:2d - orinoco/wavelan cards (lucent/agere)
>

I'm sending this via a Lucent card with prefix 0:60:1d.  A glance at my 
ARP table for a wireless-only segment shows 0:4:dd, 0:3:6b, 8:0:20, 
0:0:c, 0:c0:b7, 0:d0:b7, 8:0:6a, and more.

                                 --Steve Bellovin, http://www.research.att.com/~smb
                                 Full text of "Firewalls" book now at http://www.wilyhacker.com