Re: [squid-users] what is a pinned connection

From: Kinkie <>
Date: Mon, 27 Aug 2012 13:28:39 +0200

On Mon, Aug 27, 2012 at 1:03 PM, nipun_mlist Assam <> wrote:
> Hi All,
> In case of squid upstream proxy configuration, I frequently encounter
> a term "pinned connections".
> What does "pinned connection" mean ?

Some authentication protocols (NTLM and IIRC Negotiate) associate a
status to a TCP connection. In order for them to work correctly
through proxies, the upstream TCP connection must be associated
permanently with the downlink connection, or authentication will be
unreliable. This association is, in squid jargon, named "pinning".

Received on Mon Aug 27 2012 - 11:28:45 MDT

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