[7982] in bugtraq

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Re: Incorrect Linux ARP behavior

daemon@ATHENA.MIT.EDU (bobk)
Sat Sep 19 19:02:55 1998

Date: 	Sat, 19 Sep 1998 12:27:47 -0400
Reply-To: bobk <bobk@SINISTER.COM>
From: bobk <bobk@SINISTER.COM>
To: BUGTRAQ@NETSPACE.ORG
In-Reply-To:  <Pine.LNX.3.96.980918214644.28600A-100000@green>

You don't even need a program to demonstrate this behavior:

$ arp -s suspecthost 00:de:ad:c0:ff:ee
$ ping suspecthost

If you get a response, then it is a linux box in promiscuous mode.

don't forget:

$ arp -d suspecthost

When you are done, clearing out the bogus MAC address.



Bob Keyes,
Security Consultant
Cambridge, Mass.

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