@@ -53,10 +53,17 @@
need for /dev/urandom to be available.
--compat-mode version
- This option provides a way to alter the default of OpenVPN to be more
- compatible with the version ``version`` specified. All of the changes
- this option does can also be achieved using individual configuration
- options.
+ This option provides a convenient way to alter the defaults of OpenVPN
+ to be more compatible with the version ``version`` specified. All of
+ the changes this option applies can also be achieved using individual
+ configuration options.
+
+ The version specified with this option is the version of OpenVPN peer
+ OpenVPN should try to be compatible with. In general OpenVPN should be
+ compatible with the last two previous version without this option. E.g.
+ OpenVPN 2.6.0 should be compatible with 2.5.x and 2.4.x without this option.
+ However, there might be some edge cases that still require this option even
+ in these cases.
Note: Using this option reverts defaults to no longer recommended
values and should be avoided if possible.
@@ -67,12 +74,15 @@
- 2.5.x or lower: ``--allow-compression asym`` is automatically added
to the configuration if no other compression options are present.
- 2.4.x or lower: The cipher in ``--cipher`` is appended to
- ``--data-ciphers``
+ ``--data-ciphers``.
- 2.3.x or lower: ``--data-cipher-fallback`` is automatically added with
- the same cipher as ``--cipher``
+ the same cipher as ``--cipher``.
- 2.3.6 or lower: ``--tls-version-min 1.0`` is added to the configuration
when ``--tls-version-min`` is not explicitly set.
+ If not required, this is option should be avoided. Setting this option can
+ lower security or disable features like data-channel offloading.
+
--config file
Load additional config options from ``file`` where each line corresponds
to one command line option, but with the leading :code:`--` removed.