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DOC: configuration: clarify 'default-crt' and implicit default certificates

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Clarify the behavior of implicit default certificates when used on the
same line as the default-crt keyword.

Should be backported as far as 3.2
This commit is contained in:
William Lallemand 2025-08-27 17:09:02 +02:00
parent ab7358b366
commit 2ed515c632
1 changed files with 11 additions and 3 deletions
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14
doc/configuration.txt
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@ -16611,9 +16611,13 @@ crt-list <file>
default-crt <cert> default-crt <cert>
This option does the same as the "crt" option, with the difference that this This option does the same as the "crt" option, with the difference that this
certificate will be used as a default one. It is possible to add multiple certificate will be used as a default one as well. It is possible to add
default certificates to have an ECDSA and an RSA one, having more is not multiple default certificates to have an ECDSA and an RSA one, having more is
really useful. not really useful.
This option does not disable implicit default certificates, if a 'crt'
certificate is declared first before any 'default-crt' or other 'crt' it will
still be used as a default certificate.
A default certificate is used when no "strict-sni" option is used on the bind A default certificate is used when no "strict-sni" option is used on the bind
line. A default certificate is provided when the servername extension was not line. A default certificate is provided when the servername extension was not
@ -16622,8 +16626,12 @@ default-crt <cert>
Example: Example:
# this bind line has 2 default certificates
bind *:443 default-crt foobar.pem.rsa default-crt foobar.pem.ecdsa crt website.pem.rsa bind *:443 default-crt foobar.pem.rsa default-crt foobar.pem.ecdsa crt website.pem.rsa
# this bind line has 3 default certificates
bind *:443 crt website.pem.rsa default-crt foobar.pem.rsa default-crt foobar.pem.ecdsa
See also the "crt" keyword. See also the "crt" keyword.
curves <curves> curves <curves>