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COPYING
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OpenVPN (TM) -- An Open Source VPN daemon
Copyright (C) 2002-2024 OpenVPN Inc <sales@openvpn.net>
This distribution contains multiple components, some
of which fall under different licenses. By using OpenVPN
or any of the bundled components enumerated below, you
agree to be bound by the conditions of the license for
each respective component.
OpenVPN trademark
-----------------
"OpenVPN" is a trademark of OpenVPN Inc
OpenVPN license:
----------------
OpenVPN is distributed under the GPL license version 2 (see Below).
Special exception for linking OpenVPN with OpenSSL:
In addition, as a special exception, OpenVPN Inc gives
permission to link the code of this program with the OpenSSL
library (or with modified versions of OpenSSL that use the same
license as OpenSSL), and distribute linked combinations including
the two. You must obey the GNU General Public License in all
respects for all of the code used other than OpenSSL. If you modify
this file, you may extend this exception to your version of the
file, but you are not obligated to do so. If you do not wish to
do so, delete this exception statement from your version.
Apache2 linking exception:
---------------------------
In addition, as a special exception, OpenVPN Inc and the
contributors give permission to link the code of this program to
libraries (the "Libraries") licensed under the Apache License
version 2.0 (this work and any linked library the "Combined Work")
and copy and distribute the Combined Work without an obligation to
license the Libraries under the GNU General Public License v2
(GPL-2.0) as required by Section 2 of the GPL-2.0, and without an
obligation to refrain from imposing any additional restrictions in
the Apache License version 2 that are not in the GPL-2.0, as
required by Section 6 of the GPL-2.0. You must comply with the
GPL-2.0 in all other respects for the Combined Work, including
the obligation to provide source code. If you modify this file, you
may extend this exception to your version of the file, but you are
not obligated to do so. If you do not wish to do so, delete this
exception statement from your version.
For better understanding, in plain non-legalese English this basically says:
* The intention for this license exception is to allow OpenVPN to be
linked against APL-2 licensed libraries, even where the GPL-2.0 and
APL-2 licenses conflict from a legal perspective.
* OpenVPN itself will stay GPL-2.0 and the code belonging to the
OpenVPN project must comply to the GPL-2.0 license. This is NOT
dual-licensing of the OpenVPN code base.
* This license exception DOES NOT require NOR expect a license change
of the APL-2 based library. This exception allows using the APL-2
library as-is. However, when distributing a compiled OpenVPN binary
linking against APL-2 libraries ("Combined Work"), the REQUIREMENT is
that the APL-2 library MUST also be available on similar terms as in
GPL-2.0, like providing the source code of the library upon request,
except in the two specific ways mentioned.
* If the APL-2 based library forbids such linking and distribution,
this license exception DOES NOT overrule the restriction of the APL-2
based library. If the APL-2 library cannot satisfy the requirements
in this license exception, you CANNOT distribute an OpenVPN binary
linked with this library.
LZO license:
------------
LZO is Copyright (C) Markus F.X.J. Oberhumer,
and is licensed under the GPL.
Special exception for linking OpenVPN with both OpenSSL and LZO:
Hereby I grant a special exception to the OpenVPN project
(http://openvpn.net/) to link the LZO library with
the OpenSSL library (http://www.openssl.org).
Markus F.X.J. Oberhumer
TAP-Win32/TAP-Win64 Driver license:
-----------------------------------
This device driver was inspired by the CIPE-Win32 driver by
Damion K. Wilson.
The source and object code of the TAP-Win32/TAP-Win64 driver
is Copyright (C) 2002-2018 OpenVPN Inc, and is released under
the GPL version 2.
Windows DDK Samples:
--------------------
The Windows binary distribution includes devcon.exe, a
Microsoft DDK sample which is redistributed under the terms
of the DDK EULA.
NSIS License:
-------------
Copyright (C) 2002-2003 Joost Verburg
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute
it freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented;
you must not claim that you wrote the original software.
If you use this software in a product, an acknowledgment in the
product documentation would be appreciated but is not required.
2. Altered versions must be plainly marked as such,
and must not be misrepresented as being the original software.
3. This notice may not be removed or altered from any distribution.
OpenSSL License:
----------------
The OpenSSL toolkit stays under a dual license, i.e. both the conditions of
the OpenSSL License and the original SSLeay license apply to the toolkit.
See below for the actual license texts. Actually both licenses are BSD-style
Open Source licenses. In case of any license issues related to OpenSSL
please contact openssl-core@openssl.org.
/* ====================================================================
* Copyright (c) 1998-2003 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* openssl-core@openssl.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
Original SSLeay License
-----------------------
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
GNU Public License (GPL)
------------------------
OpenVPN, LZO, and the TAP-Win32 distributions are
licensed under the GPL version 2 (see COPYRIGHT.GPL).
In the Windows binary distribution of OpenVPN, the
GPL is reproduced below.