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| author | Peter Eisentraut <peter@eisentraut.org> | 2020-07-23 17:13:00 +0200 |
|---|---|---|
| committer | Peter Eisentraut <peter@eisentraut.org> | 2020-07-23 20:58:20 +0200 |
| commit | 77033aa97af75802dcf4985b86c4555c9722c348 (patch) | |
| tree | 22337fda1f1d9c7ef52c912c95bed50d7badcdbe | |
| parent | 3725c8ce4b29076baabb3856e1ade2f15ceee938 (diff) | |
| download | postgresql-77033aa97af75802dcf4985b86c4555c9722c348.tar.gz postgresql-77033aa97af75802dcf4985b86c4555c9722c348.zip | |
doc: Document that ssl_ciphers does not affect TLS 1.3
TLS 1.3 uses a different way of specifying ciphers and a different
OpenSSL API. PostgreSQL currently does not support setting those
ciphers. For now, just document this. In the future, support for
this might be added somehow.
Reviewed-by: Jonathan S. Katz <jkatz@postgresql.org>
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
| -rw-r--r-- | doc/src/sgml/config.sgml | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml index 239dbf97ba6..74bb25ae16e 100644 --- a/doc/src/sgml/config.sgml +++ b/doc/src/sgml/config.sgml @@ -1056,11 +1056,14 @@ include_dir 'conf.d' </term> <listitem> <para> - Specifies a list of <acronym>SSL</> cipher suites that are allowed to be - used on secure connections. See - the <citerefentry><refentrytitle>ciphers</></citerefentry> manual page - in the <application>OpenSSL</> package for the syntax of this setting - and a list of supported values. The default value is + Specifies a list of <acronym>SSL</> cipher suites that are + allowed to be used by SSL connections. See the + <citerefentry><refentrytitle>ciphers</></citerefentry> + manual page in the <application>OpenSSL</> package for the + syntax of this setting and a list of supported values. Only + connections using TLS version 1.2 and lower are affected. There is + currently no setting that controls the cipher choices used by TLS + version 1.3 connections. The default value is <literal>HIGH:MEDIUM:+3DES:!aNULL</>. It is usually reasonable, unless you have specific security requirements. This parameter can only be set at server start. |