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Re: [DNSOP] Terminology question: split DNS

Artyom Gavrichenkov <ximaera@gmail.com> Mon, 19 March 2018 18:10 UTC

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From: Artyom Gavrichenkov <ximaera@gmail.com>
Date: Mon, 19 Mar 2018 18:09:54 +0000
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To: Bob Harold <rharolde@umich.edu>
Cc: Paul Hoffman <paul.hoffman@vpnc.org>, dnsop <dnsop@ietf.org>
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Subject: Re: [DNSOP] Terminology question: split DNS
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On Mon, Mar 19, 2018 at 6:05 PM, Bob Harold <rharolde@umich.edu> wrote:
> In practice this is done by using either different DNS servers (or
> processes), or multiple "views" in a DNS configuration.

Another issue here is that, for some enterprises at least, there's no
single "internal network" anymore. There are different network scopes
(_sometimes_ nested) ranging from "formally internal but treated as
almost external" to "air gap-separated DMZ", with different policies,
including different DNS policies.

My second thought (personally) is that there might be a reason to just
bury the "split DNS" definition whatsoever and to just define a
"multi-horizon DNS", where a "horizon" is defined by a company's
policy and _usually_ depends on the source IP address of a query
(there may be exceptions).

| Artyom Gavrichenkov
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