On Fri, 10 Dec 1999, Michael C. Toren wrote:
> On Fri, 10 Dec 1999, XA Network Admin wrote:
>
>
> > On I related note (And I am not saying I want to see this done in
> > OpenSRS), Do people realize it is technically possible to put ANY
> > character in a hostname? I have had some fun with this in the past, it
> > blows some minds.
>
> Not any, but there are certainly more characters available than [A-Z0-9-];
> it's entirely an administrative restriction.
No, when I said 'any' I meant ANY character, including escape characters,
control characters, even NULL. This does not mean it follows the RFC, but
due to the RLL (Run Length Limited) encoding of labels in DNS, anything
can be specified.
A few years back, I write a DNS server that demonstrated this. I could put
spaces, nulls, etc. in a DNS label. I will dig this up and put it up if
anyone doesn't believe me and wants a demonstration.
I am concerned that this is wandering too far off the topic of this list.
If you want a demo, or don't believe me, please message me privately so I
don't further clutter this list up with off-topic threads.
Regards,
Admin,
XA.NET
p.s. for those that are interested in allowing a larger (but still limited
by BIND) number of characters in a domain name can put the following
directives in their /etc/named.conf
options{
check-names master ignore;
check-names slave ignore;
};
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