diff options
| author | Tobias Geerinckx-Rice <me@tobias.gr> | 2019-08-27 08:48:27 +0200 |
|---|---|---|
| committer | Tobias Geerinckx-Rice <me@tobias.gr> | 2019-08-27 08:49:14 +0200 |
| commit | f9c1ebdb7daea30ceaf73f43bf15c222dc4a58ad (patch) | |
| tree | 04e508cae2726190c2b42af0a294b1e97ba6e7f3 /doc | |
| parent | 32e18e9b9471e863e5857a89683f358bfb91c157 (diff) | |
services: cups: Complete SSL-OPTIONS.
…except for ‘AllowDH’, which makes no sense on GNU TLS systems.
* gnu/services/cups.scm (ssl-options?): Validate ‘DenyCBC’ and
‘DenyTLS1.0’.
* doc/guix.texi (Printing Services): Document them both.
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/guix.texi | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/doc/guix.texi b/doc/guix.texi index 6499b39ebf..90b2deb251 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -49,7 +49,7 @@ Copyright @copyright{} 2017 Christopher Allan Webber@* Copyright @copyright{} 2017, 2018 Marius Bakke@* Copyright @copyright{} 2017 Hartmut Goebel@* Copyright @copyright{} 2017 Maxim Cournoyer@* -Copyright @copyright{} 2017, 2018 Tobias Geerinckx-Rice@* +Copyright @copyright{} 2017, 2018, 2019 Tobias Geerinckx-Rice@* Copyright @copyright{} 2017 George Clemmer@* Copyright @copyright{} 2017 Andy Wingo@* Copyright @copyright{} 2017, 2018, 2019 Arun Isaac@* @@ -14757,11 +14757,14 @@ Defaults to @samp{()}. @deftypevr {@code{cups-configuration} parameter} ssl-options ssl-options Sets encryption options. By default, CUPS only supports encryption -using TLS v1.0 or higher using known secure cipher suites. The -@code{AllowRC4} option enables the 128-bit RC4 cipher suites, which are -required for some older clients that do not implement newer ones. The -@code{AllowSSL3} option enables SSL v3.0, which is required for some -older clients that do not support TLS v1.0. +using TLS v1.0 or higher using known secure cipher suites. Security is +reduced when @code{Allow} options are used, and enhanced when @code{Deny} +options are used. The @code{AllowRC4} option enables the 128-bit RC4 cipher +suites, which are required for some older clients. The @code{AllowSSL3} option +enables SSL v3.0, which is required for some older clients that do not support +TLS v1.0. The @code{DenyCBC} option disables all CBC cipher suites. The +@code{DenyTLS1.0} option disables TLS v1.0 support - this sets the minimum +protocol version to TLS v1.1. Defaults to @samp{()}. @end deftypevr |