From owner-freebsd-net@FreeBSD.ORG  Mon Apr 25 17:36:04 2005
Return-Path: <owner-freebsd-net@FreeBSD.ORG>
Delivered-To: freebsd-net@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 7A37716A4CF
	for <freebsd-net@freebsd.org>; Mon, 25 Apr 2005 17:36:04 +0000 (GMT)
Received: from www6.web2010.com (www6.web2010.com [216.157.5.254])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 0065243D2D
	for <freebsd-net@freebsd.org>; Mon, 25 Apr 2005 17:36:04 +0000 (GMT)
	(envelope-from MLandman@face2interface.com)
Received: from delliver.face2interface.com (inoc202-203.veranet.net
	[216.238.202.203] (may be forged))
	by www6.web2010.com (8.12.10/8.9.0) with ESMTP id j3PHZioM009638;
	Mon, 25 Apr 2005 13:35:45 -0400 (EDT)
Message-Id: <6.2.0.14.0.20050425133401.02a79d20@mail.newdiets.com>
X-Mailer: QUALCOMM Windows Eudora Version 6.2.0.14
Date: Mon, 25 Apr 2005 13:35:57 -0400
To: Abu Khaled <khaled.abu@gmail.com>,
	Alex Soares de Moura <alex@rnp.br>
From: Marty Landman <MLandman@face2interface.com>
In-Reply-To: <a64c109e050424214134791f19@mail.gmail.com>
References: <a64c109e050423224575a644e5@mail.gmail.com>
 <426BE9EA.5090303@rnp.br>
 <a64c109e050424214134791f19@mail.gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"; format=flowed
cc: freebsd-net@freebsd.org
Subject: Re: scaning the local network with arping/sh script
X-BeenThere: freebsd-net@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Networking and TCP/IP with FreeBSD <freebsd-net.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
	<mailto:freebsd-net-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-net>
List-Post: <mailto:freebsd-net@freebsd.org>
List-Help: <mailto:freebsd-net-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
	<mailto:freebsd-net-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 25 Apr 2005 17:36:04 -0000


> > Abu Khaled wrote:
> >
> > >I don't know much about scripting but i tried to write one to scan my
> > >local network using the net/arping port.

Hi, I wrote a similar script a while back to run on my rh linux box; it's 
pretty quick and uses the ping cmd.

 > #!/bin/bash
 >
 > pingEm()
 > {
 >          echo "preparing pings"
 >          for((i=1;i<255;i++))
 >          do
 >                  echo "ping -c1 192.168.0.$i > $$/$i &" >> pingEmAll.$$
 >          done
 >          echo "start pinging"
 >          chmod +x pingEmAll.$$ && `./pingEmAll.$$`
 > }
 >
 > findEm()
 > {
 >          for((i=1;i<255;i++))
 >          do
 >                  awk '/64 bytes from /' $$/$i > ans
 >                  awk '{ print length($0) }' ans > len
 >                  if [ `more len` ]
 >                  then
 >                          echo "$i is on the network"
 >                  fi
 >          done
 > }
 >
 > mkdir $$ && pingEm
 > findEm
 > rm -r $$ & rm pingEmAll.$$ ans len
 >
 > echo End of story
 >
 >
 > The output looks like this:
 >
 > $ ./findIps
 > preparing pings
 > start pinging
 > 1 is on the network
 > 3 is on the network
 > 7 is on the network
 > 160 is on the network
 > 240 is on the network
 > End of story
 > $
 >

hth,

Marty


Marty Landman, Face 2 Interface Inc. 845-679-9387
Search & Sort Easily: http://face2interface.com/Products/FormATable.shtml
Web Installed Formmail: http://face2interface.com/formINSTal