Authoritative Resources for Public DNS Pinging

Mike Hammett nanog at ics-il.net
Tue Feb 8 22:48:47 UTC 2022


Right, someone could do that. 


I was more here to find ammunition to show someone that they were doing something wrong than to build anything myself. 






----- 
Mike Hammett 
Intelligent Computing Solutions 

Midwest Internet Exchange 

The Brothers WISP 

----- Original Message -----

From: "Christopher Morrow" <morrowc.lists at gmail.com> 
To: "Mike Hammett" <nanog at ics-il.net> 
Cc: "Tom Beecher" <beecher at beecher.cc>, "NANOG" <nanog at nanog.org> 
Sent: Tuesday, February 8, 2022 4:35:16 PM 
Subject: Re: Authoritative Resources for Public DNS Pinging 







On Tue, Feb 8, 2022 at 4:05 PM Mike Hammett < nanog at ics-il.net > wrote: 




Some people need a clue by four and I'm looking to build my collection of them. 




Someone on Outages was nice enough to send this about someone else's thread: 
https://peering.google.com/#/learn-more/faq 


"Google services, including Google Public DNS, are not designed as ICMP network testing services" 






you know what you COULD do though... probe it with DNS requests, and then you know, test the service being offered, and still know that 'the internet is not on fire'. 



<blockquote>






----- 
Mike Hammett 
Intelligent Computing Solutions 

Midwest Internet Exchange 

The Brothers WISP 



From: "Tom Beecher" < beecher at beecher.cc > 
To: "Mike Hammett" < nanog at ics-il.net > 
Cc: "NANOG" < nanog at nanog.org > 
Sent: Tuesday, February 8, 2022 3:01:27 PM 
Subject: Re: Authoritative Resources for Public DNS Pinging 



<blockquote>
Are there any authoritative resources from said organizations saying you shouldn't use their servers for your persistent ping destinations? 
</blockquote>



I'm not sure that an ' authoritative resource ' is really needed. It should be generally understood at this point in the internet's life that networks will block / restrict some or all ICMP traffic as they need to. 


On Tue, Feb 8, 2022 at 12:58 PM Mike Hammett < nanog at ics-il.net > wrote: 

<blockquote>


Yes, pinging public DNS servers is bad. 


Googling didn't help me find anything. 


Are there any authoritative resources from said organizations saying you shouldn't use their servers for your persistent ping destinations? 




----- 
Mike Hammett 
Intelligent Computing Solutions 

Midwest Internet Exchange 

The Brothers WISP 


</blockquote>


</blockquote>

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