[dns-operations] Shameless plug for our Zonecheck software (Was: af.mil DNS issue
jabley at ca.afilias.info
Tue Jul 4 02:07:51 UTC 2006
On 3-Jul-2006, at 20:56, Joseph S D Yao wrote:
> On Sat, Jul 01, 2006 at 10:55:20PM -0400, Joe Abley wrote:
>> Cool. I hadn't actually heard of anybody blocking 53/tcp on purpose,
>> with full knowledge of the implications before. I have some
> Yes. It's done very often because most people don't understand
> that DNS
> queries are carried on both TCP port 53 and UDP port 53. This is a
> in some firewall FAQ lists.
I realise it's often done unintentionally, without full knowledge of
the implications. Hence my qualification above, in the text you quoted.
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