[Gllug] IP address detection

Adrian McMenamin adrian at mcmen.demon.co.uk
Mon Nov 15 21:54:57 UTC 2004


On Monday 15 Nov 2004 20:57, Rich Walker wrote:
> Robert Crowther <robertc at boogdesign.com> writes:
> > Adrian McMenamin wrote:
> >> Box is here, powers up, hub says the ethernet connection is there - but
> >> I have no monitor - so how do I detect what the IP address is so I can
> >> ssh or telnet my way into it?
> >
> > If the network interface is up there's probably some sort of broadcast
> > going on, the hub will presumeably be repeating that to you even if your
> > netowrk interface is ignoring it, you may pick that up with ethereal or
> > similar?
>
> arpwatch is a nice thing to run for this. Sends you emails telling you
> about new MAC addresses, new Ethernet addresses for old MAC addresses,
> new MAC addresses for old Ethernet addresses, and even hardware vendors.
>
arpwatch doesn't appear to do the job, at least it doesn't detect the card and 
ethereal doesn't seem much cop either, though there is a switch and a hub 
between my ethereal client and the Sun box.
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