Re: [SLUG] Valid characters in hostnames.

[jeff.allison@xxxxxxxxxxxxx]

slug-bounces@xxxxxxxxxxx wrote on 08/10/2003 10:58:45:

> On Wed, 8 Oct 2003 09:32 am, techsupport@xxxxxxxxx wrote:
> > slug-bounces@xxxxxxxxxxx wrote on 08/10/2003 09:33:53:
> > > On Wed, 8 Oct 2003 08:57 am, Gareth Walters wrote:
> > > > G'day all,
> > > >
> > > > Valid characters for hostnames (DNS) are still a-z and - are they
> > > > not, as per rfc952?
> > > >
> > > > I am getting some entries in my mail server logs that suggest 
there
> > > > are a few hosts trying to send mail to me with underscores in 
their 
> > > > names.
> > > > ---Gareth
> > >
> > > You are correct a-z 0-9 are valid anywhere in a host/domain name, 
the
> > > hyphen "-" is only valid if it is NOT the first or last character in 
the
> > > host/domain name.  So "foo-bar" is valid, "-fancyhost-" is invalid.
> > >
> > > I've seen plenty of invalid hostnames appearing in my mail/DNS logs 
and
> > > they always come from Windows machines.  Windows is NOT RFC 
compliant
> > > and will allow a clue-challenged user to define whatever characters 
they
> > > want in a host/domain name and then dutifully publish them on a 
public 
> > > network (eg, Internet/DNS etc).  Oh yeh, but the world should be 
that
> > > way right? M$ says so.
> >
> > I think you'll find windows is now compliant I'm sure I remember a
> > windows admin bitching when his new win2000 box would not let him use 
a
> > underscore
> >
> > Jeff Allison
> 
> I'll take your word for it...I havn't had the misfortune of doing 
> host-naming on Windows boxes since NT4-SP6 :)  If they've fixed the 
naming 
> anomalies to better reflect the RFC then that is a good thing.
> 
They didn't he wanted to call it bears_fan


Jeff Allison
Operations Manager

Mobile: 61 (0) 410 502702
eMail jeff.allison@xxxxxxxxxxxxx
____________________________________________________________________

Tokata Management Systems Pty. Limited
Loch Mews, 3/17 Laburnum Crescent
Noosaville, Qld, Australia 4566
Phone: 61 (0) 2 4399 3653
Fax: 61 (0) 2 4399 2195
Web: http://www.tokata.com.au
____________________________________________________________________

Learning Infrastructure For the Enterprise