openvpn  2.5.3
About: OpenVPN is a secure IP tunneling (Virtual Private Network) daemon. OpenVPN supports SSL/TLS security, ethernet bridging, TCP or UDP tunnel transport through proxies or NAT, support for dynamic IP addresses and DHCP.
  Fossies Dox: openvpn-2.5.3.tar.gz  ("unofficial" and yet experimental doxygen-generated source code documentation)  

openvpn Documentation

Some Fossies usage hints in advance:

  1. To see the Doxygen generated documentation please click on one of the items in the steelblue colored "quick index" bar above or use the side panel at the left which displays a hierarchical tree-like index structure and is adjustable in width.
  2. If you want to search for something by keyword rather than browse for it you can use the client side search facility (using Javascript and DHTML) that provides live searching, i.e. the search results are presented and adapted as you type in the Search input field at the top right.
  3. Doxygen doesn't incorporate all member files but just a definable subset (basically the main project source code files that are written in a supported language). So to search and browse all member files you may visit the Fossies openvpn-2.5.3.tar.gz contents page and use the Fossies standard member browsing features (also with source code highlighting and additionally with optional code folding).
OpenVPN -- A Secure tunneling daemon

Copyright (C) 2002-2018 OpenVPN Inc. This program is free software;
you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2
as published by the Free Software Foundation.


To get the latest release of OpenVPN, go to:

To Build and Install,

	tar -zxf openvpn-<version>.tar.gz
	cd openvpn-<version>
	make install

or see the file INSTALL for more info.


For detailed information on OpenVPN, including examples, see the man page

For a sample VPN configuration, see

To report an issue, see

For a description of OpenVPN's underlying protocol,
  see the file ssl.h included in the source distribution.


Other Files & Directories:

* -- script to rebuild our configure
  script and makefile.

* sample/sample-scripts/verify-cn

  A sample perl script which can be used with OpenVPN's
  --tls-verify option to provide a customized authentication
  test on embedded X509 certificate fields.

* sample/sample-keys/

  Sample RSA keys and certificates.  DON'T USE THESE FILES

* sample/sample-config-files/

  A collection of OpenVPN config files and scripts from
  the HOWTO at


Note that easy-rsa and tap-windows are now maintained in their own subprojects.
Their source code is available here:

The old cross-compilation environment (domake-win) and the Python-based
buildsystem have been replaced with openvpn-build:

See the INSTALL file for usage information.