allow-query and views
Matus UHLAR - fantomas
uhlar at fantomas.sk
Thu Feb 21 17:10:55 UTC 2013
>>On 21.02.13 08:59, Robert Moskowitz wrote:
>>>I am reading: https://www.isc.org/software/bind/faq and 'What has
>>>changed in the behavior of "allow-recursion" and
>>>"allow-query-cache" '.
>>>
>>>
>>>I am struggling here trying to match up the various access
>>>control features, particularly when we are suppose to have
>>>different views for different clients.
>>>
>>>So for my internal view where I:
>>>
>>> match-clients { httnets; };
>>> match-destinations { httnets; };
>>> recursion yes;
>>> allow-query { httnets; };
>On 02/21/2013 10:40 AM, Matus UHLAR - fantomas wrote:
>>allow-query is useless here, unless you have disabled it somewhere.
>>the match-clients does enough.
On 21.02.13 11:08, Robert Moskowitz wrote:
>No. allow-query made my internal view available to my local clients.
allow-query defaults to all. match-clients directs your internal clients to
the internal view and unless you have disabled querying elsewhere, allowing
it is not important.
>Check my earlier posts here. I was down here with just the
>match-clients and without the allow-query; all local hosts were
>getting denied access. It was painful for a little while.
Probably they did not have a recursion enabled. allow-recursion defaults to
local networks, if not specified directly or by allow-query-cache.
>>>Do I also add
>>>
>>> allow-query-cache { httnets; };
>>>???
>>
>>you apparently want to turn on recursion for your clients, which
>>means, you
>>should use "allow-recursion" and let allow-query-cache be teh same by
>>default.
>
>Recursion seems to be working with just "recursion yes" here.
Recursion by itself, yes. But the default for allow-recursion might not be
enough for you.
In fact, you can use "allow-recursion { all; };" and still only internal
clients (in internal view) would have it allowed.
> What does allow-recursion add with given all the other restrictive
>clauses?
It allows specified clients to use recursion. Both allow-query-cache and
allow-recursion default to the other one, when only one is specified.
However, allow-recursion gives a better idea of what is really allowed.
>>>And for the external view where:
>>>
>>> match-clients { any; };
>>> match-destinations { any; };
>>> allow-query { any; };
>>> recursion no;
>>>
>>>Do I add:
>>>
>>> allow-query-cache { localhost; };
--
Matus UHLAR - fantomas, uhlar at fantomas.sk ; http://www.fantomas.sk/
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