[GLLUG] Spurious DNS zone notifications

John Winters john at sinodun.org.uk
Sat May 2 11:29:43 UTC 2015

I've just configured a VPS as a secondary DNS server.

Within minutes of setting it up, it started getting spurious zone
notifications from unknown IP addresses, e.g.:

May  2 12:21:51 nimbus named[830]: client received
notify for zone 'griffen.org.uk'
May  2 12:21:51 nimbus named[830]: zone griffen.org.uk/IN: refused
notify from non-master:

Is this a known attempted exploit, or is there a legitimate reason why
other servers think they should be updating mine?  I've tried google
searching, but can find no reference to it.


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