Bind9 - Reverse net /20 mask 255.255.240.0
Mark Andrews
Mark_Andrews at isc.org
Thu Mar 6 23:05:54 UTC 2008
>
> > Hello? I doubt with a setup for Reverse to
> > The networks contracted to the AS, here is the problem and attitudes held,
> >
> >
> > I would like obtain information where to set the bind9 to do the reverse of
> a
> > network
> > /20 mask 255.255.240.0 and
>
> Just set up the 16 reverse zones that make up the /20.
>
> > /18 mask 255.255.192.0
>
> Just set up the 4 reverse zones that make up the /18.
Just set up the 64 reverse zones that make up the /18.
> RFC 2317 is for /25 - /32. It was designed to alleviate the
> need to create up to 128 zones, along with their delegations,
> which each of which was like:
>
> @ SOA <soa details>
> @ NS <server1>
> @ NS <server2>
> @ PTR <name>
>
> RFC 2317 gives you 1 zone for up to 128 hosts rather than
> 1 zone per host.
>
> For /17-/24 you have 1 zone per 256 hosts with traditional
> delegation.
>
> For /9-/16 you have 1 zone per 65536 hosts with traditional
> delegation.
>
> Mark
> --
> Mark Andrews, ISC
> 1 Seymour St., Dundas Valley, NSW 2117, Australia
> PHONE: +61 2 9871 4742 INTERNET: Mark_Andrews at isc.org
--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: Mark_Andrews at isc.org
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