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Arne Schwabe c67e93b252 Make compression asymmetric by default and add warnings 
This commit introduces the allow-compression option that allow
changing the new default to the previous default or to a stricter
version.

Warning for comp-lzo/compress are not generated in the post option check
(options_postprocess_mutate) since these warnings should also be shown
on pushed options. Moving the showing the warning showing for
allow-compression to options_postprocess_mutate will complicate the
option handling without giving any other benefit.

Patch V2: fix spelling and grammer (thanks tincantech), also fix
   uncompressiable to incompressible in three other instances in the
   source code

Patch V3: fix overlong lines. Do not allow compression to be pushed

Patch V4: rename COMP_F_NO_ASYM to COMP_F_ALLOW_COMPRESS, fix style.
          The logic of warnings etc in options.c has not been changed
          since adding all the code to mutate_options would a lot more
          and more complicated code and after discussion we decided that
          it is okay as is.

Patch V5: Reword warnings, rebase on master

Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Lev Stipakov <lstipakov@gmail.com>
Message-Id: <20200626110554.3690-1-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg20138.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
2020-06-26 14:34:47 +02:00
..
doxygen build: Remove --disable-server from ./configure 2020-05-07 21:53:22 +02:00
android.txt Handle DNS6 option on Android 2016-11-22 17:31:30 +01:00
interactive-service-notes.rst Add Interactive Service developer documentation 2018-06-09 20:14:26 +02:00
keying-material-exporter.txt Fix various spelling mistakes 2019-02-06 19:07:34 +01:00
Makefile.am Add Interactive Service developer documentation 2018-06-09 20:14:26 +02:00
management-notes.txt Implement forwarding client CR_RESPONSE messages to management 2020-06-20 12:38:45 +02:00
openvpn.8 Make compression asymmetric by default and add warnings 2020-06-26 14:34:47 +02:00
README.plugins build: integrate plugins build into core build 2012-06-26 11:29:02 +02:00
tls-crypt-v2.txt tls-crypt-v2: add specification to doc/ 2018-10-26 18:53:32 +02:00

README.plugins 

OpenVPN Plugins
---------------

Starting with OpenVPN 2.0-beta17, compiled plugin modules are
supported on any *nix OS which includes libdl or on Windows.
One or more modules may be loaded into OpenVPN using
the --plugin directive, and each plugin module is capable of
intercepting any of the script callbacks which OpenVPN supports:

(1) up
(2) down
(3) route-up
(4) ipchange
(5) tls-verify
(6) auth-user-pass-verify
(7) client-connect
(8) client-disconnect
(9) learn-address

See the openvpn-plugin.h file in the top-level directory of the
OpenVPN source distribution for more detailed information
on the plugin interface.

Included Plugins
----------------

auth-pam -- Authenticate using PAM and a split privilege
            execution model which functions even if
            root privileges or the execution environment
            have been altered with --user/--group/--chroot.
            Tested on Linux only.

down-root -- Enable the running of down scripts with root privileges
             even if --user/--group/--chroot have been used
             to drop root privileges or change the execution
             environment.  Not applicable on Windows.

examples -- A simple example that demonstrates a portable
            plugin, i.e. one which can be built for *nix
            or Windows from the same source.

Building Plugins
----------------

cd to the top-level directory of a plugin, and use the
"make" command to build it.  The examples plugin is
built using a build script, not a makefile.