Re: Recommended DNS server for a medium 20-30k users isp

[Mike Hammett via NANOG <nanog () lists nanog org>]

Responding to the thread in general, not any particular person.

For those of you with a firewall in front of your DNS servers, what are you having the firewall do?



-----
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com

Midwest-IX
http://www.midwest-ix.com

----- Original Message -----
From: "DurgaPrasad - DatasoftComnet via NANOG" <nanog () lists nanog org>
To: nanog () lists nanog org
Cc: "DurgaPrasad - DatasoftComnet" <dp () datasoftcomnet com>
Sent: Thursday, August 7, 2025 7:44:40 PM
Subject: Recommended DNS server for a medium 20-30k users isp 

Hello all,
Do you have any recommendations for recursive DNS servers for a medium sized (20-30k users) ISP.
We have used powerdns and unbound but sometimes find the caching times a bit on upper side. Any suggestions between 
these two or anything new?
Also need points on how much we tune the settings
pros and cons if any.

Thank you /DP
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