Re: [gentoo-user] [OT] Finding other machines on the network

[Nick Rout <nick@rout.co.nz>]

On Wed, 2005-08-31 at 08:38 +0200, Frank Schafer wrote:
> On Tue, 2005-08-30 at 17:51 -0500, John Jolet wrote:
> > On Aug 30, 2005, at 4:57 PM, Christoph Gysin wrote:
> > 
> > > John Jolet wrote:
> > >
> > >> yeah, if it's got a firewall disallowing icmp responses.  then you  
> > >> can do nmap -P0 to find it.  ping would never find it.  It's gotta  
> > >> have SOME port open.
> > >>
> > >
> > > As far as I've read his post, there's no firewall involved. So why  
> > > should he do portscans in all hosts on the subnet?
> > >
> > >
> > >> Also, nmap can do os fingerprinting and probably show you which  
> > >> one is the solaris or sunos machine...
> > >>
> > >
> > > Sure, but that's not what he's looking for...
> > >
> > perhaps I read the initial post wrong...I was under the impression  
> > that he had a headless sun box with a static ip on a known subnet,  
> > but the exact ip wasn't known.
> 
> ... what about arp?

That was the answer given in an alomst identical problem recently on
this list (or was it another??)

arp will rely on the box having actually done something within arp's
cache period.

if there is no network activity, there may be no arp entry.

> 
> Just a thought
> Frank
-- 
Nick Rout <nick@rout.co.nz>

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