host name with '_' -> errors

Kevin Darcy kcd at daimlerchrysler.com
Thu Jan 4 16:28:22 UTC 2001


Joseph S D Yao wrote:

> On Thu, Jan 04, 2001 at 04:20:56PM +0100, Fran=E7ois Chenais wrote:
> > Hello
> >
> > it seems that bind8.2.2 (8.2.2-P5/slackware 7.1) doesn't accept
> > hostname with '_' while bind 4 accept !!
> >
> > is there any option to allow this ?
>
> Yes, but since that has always been an illegal character in host names,
> perhaps you should consider phasing in legal names.  Early versions of
> BIND 4 were extremely permissive, but that was changed to counter some
> exploits.

I feel compelled to point out that none of the major exploits involved th=
e
underscore character, which was basically just collateral damage in this
whole "let's scramble to prevent potential exploits" debacle.


- Kevin






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