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Re: Logging of PAM Authentication Failure

From: Craig Ringer <craig(at)2ndquadrant(dot)com>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: Amit Langote <amitlangote09(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Logging of PAM Authentication Failure
Date: 2013-05-28 05:32:53
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-hackers
On 05/11/2013 03:25 AM, Robert Haas wrote:
> Not really.  We could potentially fix it by extending the wire
> protocol to allow the server to respond to the client's startup packet
> with a further challenge, and extend libpq to report that challenge
> back to the user and allow sending a response.  But that would break
> on-the-wire compatibility, which we haven't done in a good 10 years,
> and certainly wouldn't be worthwhile just for this.
We were just talking about "things we'd like to do in wire protocol 4".

Allowing multi-stage authentication has come up repeatedly and should
perhaps go on that list. The most obvious case being "ident auth failed,
demand md5".

 Craig Ringer         
 PostgreSQL Development, 24x7 Support, Training & Services

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