[dns-operations] AWS footnote: DNS firewall rules are UDP only

Warren Kumari warren at kumari.net
Wed Jan 28 20:45:13 UTC 2015

On Wed, Jan 28, 2015 at 2:28 PM, Fred Morris <m3047 at m3047.net> wrote:
> I just noticed that when configuring firewall rules for an AWS instance,
> if "DNS" is chosen then the (only) protocol automagically filled in is
> UDP.
> To get TCP, you have to create a custom TCP rule.
> When you save, the UDP one gets saved as "DNS", the TCP one stays "custom
> TCP rule".

Well, of course. What did you expect? DNS only uses UDP...

<Warren runs away, giggling manically....>


> --
> Fred Morris
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I don't think the execution is relevant when it was obviously a bad
idea in the first place.
This is like putting rabid weasels in your pants, and later expressing
regret at having chosen those particular rabid weasels and that pair
of pants.

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