Re: back by popular demand - a DNS calculator

Joe Touch <touch@isi.edu> Fri, 15 February 2013 17:19 UTC

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Date: Fri, 15 Feb 2013 09:19:01 -0800
From: Joe Touch <touch@isi.edu>
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To: "Marco Davids (Prive)" <mdavids@forfun.net>
Subject: Re: back by popular demand - a DNS calculator
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On 2/14/2013 3:07 PM, Marco Davids (Prive) wrote:
> Op 15-02-13 00:02, Joe Touch schreef:
>>
>> By popular request, I've restored the DNS calculator function as an
>> operational service. See:
>>
>> http://www.isi.edu/touch/tools/dns-calc.html
>
> Great! But.... I was hoping it would do DNSSEC by now.
>
> Like Bert's  tool has been doing for ages:
>
> dig 2.3.*.2.+.rp.secret-wg.org TXT +dnssec
>
> http://bert.secret-wg.org/Tools/index.html

I'd be glad to know how long that's been up (mine was posted in 2001 for 
the Sigcomm OO session). AFAICT, that web page was put up in 2003, but 
I'd be glad to hear otherwise.

Some key differences, FWIW:

	- my variant returns the response as an IP address,
	rather than inside a TXT record (there's a point to
	that, as per the OO slides posted on the page above)

	- the Bert version uses DNS strings that aren't valid
	(*, +, ',', ++)

	- my variant has a static number of entries (40,003).
	That's intentional to avoid potential impact on
	DNS caches.

Joe