Re: Time to drop RADIUS support?

From: Michael Banck <mbanck(at)gmx(dot)net>
To: Thomas Munro <thomas(dot)munro(at)gmail(dot)com>
Cc: PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Time to drop RADIUS support?
Date: 2026-01-23 10:43:22
Message-ID: 20260123104322.GA17962@p46.dedyn.io;lightning.p46.dedyn.io
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Hi,

On Fri, Jan 23, 2026 at 11:22:45PM +1300, Thomas Munro wrote:
> The real recommendation of the paper was "don't use RADIUS/UDP at
> all", and I don't want to expend energy writing a RADIUS/TLS client
> for a hypothetical user, so I think we should just delete it all, and
> stick a deprecation notice in the release branch documentation, as
> attached.

So you are saying we add a deprecation notice in the back branches and
drop it in V19? If this is a severe security issue then maybe we can
just remove it everywhere (ugh), or if not, I think it probably warrants
at least one release cycle of deprecation. Do we have a formal
deprecation timeline policy nowadays?

Michael

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