Security Basics: RE: How to find a changing IP on ethernet network

["Aditya, ALD [Aditya Lalit Deshmukh]" <aditya.deshmukh () online gateway technolabs net>]

> -----Original Message-----
> From: Ivan Andres Hernandez Puga
> [mailto:ivan.hernandez () globalsis com ar]
> Sent: Friday, February 20, 2004 8:24 PM
> To: security-basics () securityfocus com
> Subject: How to find a changing IP on ethernet network
>
>
> Hello. I have a client with a simple Ethernet network with HUB's 
> connecting and there is one person that is changing it's IP and creating 
> conflicts. What would you do to track down that person? i mean, to find 
> who does that?

it would be very simple to do this by using a network sniffer, ethereal is the best one out there and freeware to boot 

so what you will require to do is to create a ip to mac address mappings and then see if any of them changes if it does 
you have found your culprit by the mac address !

-aditya


________________________________________________________________________
Delivered using the Free Personal Edition of Mailtraq (www.mailtraq.com)

---------------------------------------------------------------------------
Free trial: Astaro Security Linux -- firewall with Spam/Virus Protection

Protect your network with the comprehensive security solution that
integrates six applications for ease of use and lower TCO.

Firewall - Virus protection - Spam protection - URL blocking - VPN
- Wireless security.

Download 30-day evaluation at:
http://www.securityfocus.com/sponsor/Astaro_security-basics_040219
----------------------------------------------------------------------------