Re: [dns-operations] DNS over TCP response fragmentation

2023-10-03 Thread Antonio Prado via dns-operations 
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On 10/3/23 11:25 AM, Jan Petto wrote:
For my research, I am sending DNS requests over TCP to many different 
recursive DNS servers all over the world.

hi,

it seems you found a bunch of open resolvers, I mean services run by 
"unaware" guys, services that were most likely not intentionally exposed 
on the Internet as "public" DNS.


so I find it difficult to draw "scientific" conclusions based on queries 
made to those services.


--
antonio


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Re: [dns-operations] Vodafone AS25135 sending 3k req/s to AS112

2022-07-14 Thread Antonio Prado via dns-operations 
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On 7/13/22 7:36 PM, Alarig Le Lay wrote:

Vodafone is sending 3k req/s (~10Mbps) of DNS garbage to my AS112 node
from 88.82.0.0/19
If someone knows somebody there, could you please tell them to fix their
resolvers?


well, that's the reason why you are serving an AS112 instance, after all

--
antonio


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Re: [dns-operations] cheap traffic measure for a small set of zones

2021-03-26 Thread Antonio Prado via dns-operations 
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On 3/26/21 5:20 AM, Randy Bush wrote:

is there a simple tool to run on a server to measure query and data
rates for a small set of zones?




bingo!  thanks.


hi,

dnstop does not support TCP at this time

--
antonio
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