Disallow recursion on named.conf

Question

I want to disable recursive DNS queries against the nameserver

Does this line work out

recursion no;

or do I have put in these lines

allow-transfer {“none”;}; allow-recursion {“none”;}; recursion no;

Answer 1

allow-transfer has nothing to do with recursion - zone transfers are their own animal and have nothing to do with recursive lookups; they should only ever be allowed to slave authoritative servers.

Setting recursion no; means that all allow-recursion settings are irrelevant and will be ignored; that setting is indeed unnecessary.