Protecting bind from DNS cache poisoning!!!

[Shiva Raman]

Dear All

   I am running   Bind caching and bind authoritative servers with current
9.7  version. I would like
to know the steps to be followed to protect bind from  DNS Cache poisoning.
The bind DNS server
is running behind the firewall which allows only DNS queries .

kindly share  your views.

Thanks in advance.

Shiva Raman
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