It's clearly not hard. It's obviously not expensive. I'm already doing
it and have been for years. But it's more than $0.
I've seen the geolocation issue in the past. More recently I tried to
demonstrate it to someone and it turned out that Google DNS and our own
DNS gave us Netflix content from the same source.
If I used someone else's DNS and that 3rd party went away, then there
are apparently 10 other "3rd parties" to choose from. I recognize the
point that it's a 3rd party and we don't want to rely on 3rd parties:
But can we honestly say that our DNS servers are more reliable than
Google or Cloudflare?
I'm not shutting down the DNS servers today, I'm just trying to look
inward and analyze what we're doing and why. Are we doing it because it
actually makes sense or are we doing it because we've always done it and
we can't imagine another way?
------ Original Message ------
From: "Justin Wilson" <[email protected]>
To: [email protected]
Sent: 4/3/2018 8:48:33 AM
Subject: Re: [AFMUG] new DNS
You have your own DNS for one huge reason. GeoLocation for when it
comes to Content Networks such as Netflix. One of the mechanisms they
employ is using DNS Geolocation to serve you the closest content. Not
only do they do a GeLocate on your IP, but some also do a check to make
sure your DNS servers are coming from the same place as your customers.
This is especially true if you or one of your upstreams is peered with
Netflix or someone on an exchange. Otherwise, if you are using Google
or other DNS you may be in Kansas, and you might be getting content
from Netflix out of California, when you could be getting it literally
next door. Makes the customer experience much better. There are RFCs
that address this, but if they are implemented is a crapshoot.
Secondly, relying on a 3rd party for such a critical service such as
DNS can be troublesome. Would you rely on someone else to provide the
wireless signal to your customers blindly? If so, then offloading DNS
is okay for you. I want more control for such a critical service.
I hear folks worry about the bandwidth DNS takes up. It’s not a
concern either way. If your network can’t support the bandwidth of DNS
queries then you have deeper issues.
It’s hard. No it’s not. Tons of tutorials on Bind for every flavor of
linux. Just about any old machine laying around can run DNS.
If anyone wants to know how easy, and how cheap it is to spin up DNS
(both recursive and authoritative) hit me up. I will gladly talk with
you about some strategy.
Justin Wilson
[email protected]
www.mtin.net
www.midwest-ix.com
On Apr 3, 2018, at 6:34 AM, Paul Stewart <[email protected]> wrote:
I know there is often debates on here about running any servers, some
servers, or doing everything in-house (mail, web, DNS etc). Even if
you outsource everything I would still run recursive caching DNS ….
Performance and reliability the main reasons. Some CDN’s and other
services determine the path to send you content based on where the DNS
look up occurs and in our case that’s a significant factor …
We operate our own anycasted DNS …actually two of them. One set of
servers for recursive caching and another set for authoritative DNS.
Paul
From: Af <[email protected]> on behalf of "Forrest Christian (List
Account)" <[email protected]>
Reply-To: <[email protected]>
Date: Tuesday, April 3, 2018 at 4:33 AM
To: af <[email protected]>
Subject: Re: [AFMUG] new DNS
Because it's good for your customers, and it should take very little
time to set one up.
The main reason for this is so that websites serve data from the
closest server due to the way that DNS anycast works.
And, the biggest one - to have control over a critical piece of
infrastructure for your customers. What happens if one of these
public DNS services go down and you have hundreds of customers
pointing at it?
On Mon, Apr 2, 2018 at 11:33 PM, Adam Moffett <[email protected]>
wrote:
Someone remind me again why I have my own recursive DNS.
------ Original Message ------
From: "Josh Reynolds" <[email protected]>
To: [email protected]
Sent: 4/2/2018 3:22:57 PM
Subject: Re: [AFMUG] new DNS
Yes, bunch of discussions over the past few days on NANOG and some
of the vendor mailing lists.
On Mon, Apr 2, 2018, 2:21 PM Travis Johnson <[email protected]> wrote:
https://gizmodo.com/how-to-speed-up-your-internet-and-protect-your-privacy-1824256587
Faster and more private than Google or others. :)
Travis
--
Forrest Christian CEO, PacketFlux Technologies, Inc.
Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602
[email protected] | http://www.packetflux.com
<http://www.packetflux.com/>
