DNS Amplification attack?
fweimer at bfk.de
Thu Jan 22 14:46:25 UTC 2009
* Mark Andrews:
> Authoritative servers need a cache. Authoritative servers
> need to ask queries. The DNS protocol has evolved since
> RFC 1034 and RFC 1035 and authoritative servers need to
> translate named to addresses for their own use.
> See RFC 1996, A Mechanism for Prompt Notification of Zone
> Changes (DNS NOTIFY).
Authoritative servers in typical configurations need a resolver (and
with views, you might even need a very specific resolver). This does
not mean that authoritative servers must be caches. It also does not
mean that a resolver operated from the view which contains a
particular authoritatively served zone picks up the correct data (in
other words, there are configurations where the current BIND magic
does not work).
Florian Weimer <fweimer at bfk.de>
BFK edv-consulting GmbH http://www.bfk.de/
Kriegsstraße 100 tel: +49-721-96201-1
D-76133 Karlsruhe fax: +49-721-96201-99
More information about the NANOG