DNS Access
Mark_Andrews at isc.org
Mark_Andrews at isc.org
Thu Nov 28 06:00:50 UTC 2002
> Having looked at now 1033, 1034 and 1035 with more time
>
> I have come to understand in part the Header section Format ; Question
> Section Format & Resource Record Format. (helped trapping a packet with a
> DNS query)
>
> The request had a Header with an:
> ID of 8133
> Param of 0256 from what I understand that is an RA = 1 all others = 0
> QDCount of 0001
> ANCount of 0000
> NSCount of 0000
> Question how is the ID created (Random number I'm guessing??)
Yes.
> how is the Checksum created ?
There is no checksum at the DNS level
>
> This was a single request TYPE = 255 and CLASS = 1 using UDP
>
> How What would one set the
> ID, Param, QDCount, ANCount, NSCount & TYPE and CLASS to in order to do a
> TCP
> Zone Transfer request??
>
> I couldn't work this out from the 1033 -> 1035 text information?
It's there. I suggest that you re-read them again. A zone
transfer is requested using type AXFR.
See RFC 1034: Section 4.3.5. Zone maintenance and transfers
Mark
> Anyone have an Idea?
> Thanks In advance
>
> Barry
>
>
--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: Mark.Andrews at isc.org
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