Fwd: [Dnsmasq-discuss] Request for brain-storm: Rogue dhcp-servers on the lan

[Rune Kock]

Oops, I forgot to cc the list on a number of my replies...


---------- Forwarded message ----------
From: Rune Kock <rune.kock at gmail.com>
Date: Thu, Aug 21, 2008 at 17:10
Subject: Re: [Dnsmasq-discuss] Request for brain-storm: Rogue
dhcp-servers on the lan
To: Simon Kelley <simon at thekelleys.org.uk>


>> You could try something which broadcasts a DHCPDISCOVER packet, that
>> should give you replies from every DHCP server on the net, with their IP
>> addresses.
>
> Yes, that would at least alert me immediately when the thing happens.
> Know any program that can do that, or would I have to write one from
> scratch?

Sorry, should have googled before asking:
http://www.net.princeton.edu/software/dhcp_probe/