doc: Specify when ssl_prefer_server_ciphers was added
The ssl_prefer_server_ciphers setting is quite important from a security point of view, so simply stating that older versions doesn't have it isn't very helpful. This adds the version when the GUC was added to help readers. Backpatch to all supported versions since this setting has been around since 9.4. Reviewed-by: Peter Eisentraut <peter@eisentraut.org> Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://postgr.es/m/5D7E0F5E-E620-4D54-8788-66D421AC76F0@yesql.se Backpatch-through: v12
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@ -1443,11 +1443,11 @@ include_dir 'conf.d'
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</para>
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</para>
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<para>
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<para>
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Older PostgreSQL versions do not have this setting and always use the
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<productname>PostgreSQL</productname> versions before 9.4 do not have
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client's preferences. This setting is mainly for backward
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this setting and always use the client's preferences. This setting is
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compatibility with those versions. Using the server's preferences is
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mainly for backward compatibility with those versions. Using the
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usually better because it is more likely that the server is appropriately
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server's preferences is usually better because it is more likely that
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configured.
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the server is appropriately configured.
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</para>
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</para>
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</listitem>
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</listitem>
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</varlistentry>
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</varlistentry>
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