[1689] in bugtraq
Re: Detecting a sniffer
daemon@ATHENA.MIT.EDU (Valdis.Kletnieks@vt.edu)
Wed May 3 19:05:17 1995
To: bugtraq@fc.net
In-Reply-To: Your message of "Tue, 02 May 1995 17:56:32 +1000."
<199505020756.RAA11408@suburbia.apana.org.au>
From: Valdis.Kletnieks@vt.edu
Date: Wed, 03 May 1995 15:34:27 -0400
On Tue, 02 May 1995 17:56:32 +1000, Julian Assange said:
> > On Mon, 1 May 1995, Bennett Todd wrote:
> > > You can't "detect a sniffer" from looking at the net; [...]
> > Not even with a Time Domain Reflectometer?
> Probably easier to just look at the wire, dodn't you think?
Especially considering that most TDR boxen I've seen sort of screw the
cable while they're running - all those electromagnetic sonar pulses sort
of piss off anything trying to transmit at the time. ;)
If you're *really* concerned about sniffers on your Ethernet, just take
that little 50ohm terminator on the end off - the bits will leak out
before the sniffer can see them. Make sure you put the end of the
cable in a bucket so the bits dont get all over the floor...
Valdis Kletnieks
Computer Systems Engineer
Virginia Tech
