Path: utzoo!attcan!uunet!husc6!purdue!decwrl!meridn.dec.com!fernald
From: fernald@meridn.dec.com
Newsgroups: comp.dcom.lans
Subject: unauthorized taps
Message-ID: <8811152206.AA10366@decwrl.dec.com>
Date: 15 Nov 88 22:06:33 GMT
Organization: Digital Equipment Corporation
Lines: 25

In article <5571@polyslo.CalPoly.EDU>, mliu@polyslo.CalPoly.EDU (Mei-Ling L. Liu) writes:
> 
>        *** Detecting Unauthorized Connections on Your Network ***
> 
>        I am anxious to hear from people who  have  looked  into  or  have
>        implemented tools to detect unauthorized connections on their net-
>        works.
 

	   I used the following network tool to verify network configuration.
	It could also be run daily by a system manager to detect unauthorized 
	taps:

		NCP> set mod config circ xyz-0 surv enab
		

	   This starts the NICONFIG monitor to report the presence of taps
	at the physical link.  One can review a listing using:

		NCP> show mod config circ xyz-0 char

     +------------------------+-----------------------------------------+ 
     |  c.b. fernald          |  arpa:  fernald%meridn.dec@decwrl.arpa  |
     |  DEC Connecticut SWS   |  uucp:  decwrl!meridn.dec.com!fernald   |
     +------------------------+-----------------------------------------+