Re: [PATCH v12] GSSAPI encryption support

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Robbie Harwood <rharwood(at)redhat(dot)com>
Cc: Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, PostgreSQL mailing lists <pgsql-hackers(at)postgresql(dot)org>, Stephen Frost <sfrost(at)snowman(dot)net>
Subject: Re: [PATCH v12] GSSAPI encryption support
Date: 2016-07-26 15:29:08
Message-ID: 18337.1469546948@sss.pgh.pa.us
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Robbie Harwood <rharwood(at)redhat(dot)com> writes:
> So there's a connection setting `sslmode` that we'll want something
> similar to here (`gssapimode` or so). `sslmode` has six settings, but I
> think we only need three for GSSAPI: "disable", "allow", and "prefer"
> (which presumably would be the default).

FWIW, there is quite a bit of unhappiness around sslmode=prefer, see
for example this thread:
https://www.postgresql.org/message-id/flat/2A5EFBDC-41C6-42A8-8B6D-E69DA60E9962%40eggerapps.at

I do not know if we can come up with a better answer, but I'd caution
you against thinking that that's a problem-free model to emulate.

regards, tom lane

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