Open-source notices

gate42 is built from open-source software. Here are the licences, the copyright notices and where the source code comes from.

gate42 is based on OPNsense

gate42 is Padmini Systems' build of OPNsense®, copyright © Deciso B.V. and the OPNsense contributors. OPNsense is based on FreeBSD, and on earlier work in pfSense® and m0n0wall. The same notices are on the About page of every gate42 (Lobby › About).

OPNsense® is a registered trademark of Deciso B.V., and FreeBSD® a registered trademark of The FreeBSD Foundation. gate42 is not affiliated with or endorsed by either of them.

Licences

Most of gate42 comes under the BSD licence. The OPNsense core licence and the FreeBSD copyright notice follow below, word for word. Every other package in an image is listed with its version and licence on the page of each release, and in the release's manifest.

Source code


OPNsense core, plugins and ports	github.com/opnsense
FreeBSD	cgit.freebsd.org/src
Packages	each package's own project, listed in the FreeBSD ports and OPNsense ports trees

Some packages in gate42 come under the GNU GPL or LGPL. For at least three years after each release, Padmini Systems gives anyone, on request, the complete source code of those packages in that release, at no charge beyond the cost of providing it. Write to support@padminisys.com and name the release and the package.

OPNsense core licence

Copyright (c) 2014-2026 Ad Schellevis <ad@opnsense.org>
Copyright (c) 2017 Alexander Shursha <kekek2@ya.ru>
Copyright (c) 2004 Bachman Kharazmi
Copyright (c) 2005-2008 Bill Marquette <bill.marquette@gmail.com>
Copyright (c) 2012 Carlos Cesario <carloscesario@gmail.com>
Copyright (c) 2024-2025 Cedrik Pischem
Copyright (c) 2005-2006 Colin Smith <ethethlay@gmail.com>
Copyright (c) 2013 Dagorlad
Copyright (c) 2006 Daniel S. Haischt
Copyright (c) 2005-2012 David Zeller
Copyright (c) 2014-2026 Deciso B.V.
Copyright (c) 2010 Erik Fonnesbeck
Copyright (c) 2009 Erik Kristensen <erik@erikkristensen.com>
Copyright (c) 2008-2011 Ermal Luçi
Copyright (c) 2005 Espen Johansen
Copyright (c) 2016-2019 EURO-LOG AG
Copyright (c) 2017-2019 Fabian Franz
Copyright (c) 2006 Fernando Lemos
Copyright (c) 2014-2026 Franco Fichtner <franco@opnsense.org>
Copyright (c) 2004 Fred Mol <fredmol@xs4all.nl>
Copyright (c) 2010 Gabriel B. <gnoahb@gmail.com>
Copyright (c) 2026 Greelan
Copyright (c) 2016 IT-assistans Sverige AB
Copyright (c) 2010-2012 Jim Pingle <jimp@pfsense.org>
Copyright (c) 2012 Jonas von Andrian
Copyright (c) 2015 Jos Schellevis <jos@opnsense.org>
Copyright (c) 2026 Konstantinos Spartalis <cspartalis@potatonetworks.com>
Copyright (c) 2021 Kyle Evans <kevans@FreeBSD.org>
Copyright (c) 2015 Manuel Faux <mfaux@conf.at>
Copyright (c) 2003-2006 Manuel Kasper <mk@neon1.net>
Copyright (c) 2012 Marcello Coutinho
Copyright (c) 2017-2020 Martin Wasley <mjwasley@gmail.com>
Copyright (c) 2022 Maurice Walker <maurice@walker.earth>
Copyright (c) 2010-2015 Michael Bostock
Copyright (c) 2018-2021 Michael Muenz <m.muenz@gmail.com>
Copyright (c) 2019 Pascal Mathis <mail@pascalmathis.com>
Copyright (c) 2022 Patrik Kernstock <patrik@kernstock.net>
Copyright (c) 2006 Paul Taylor <paultaylor@winn-dixie.com>
Copyright (c) 2005-2006 Peter Allgeyer <allgeyer@web.de>
Copyright (c) 2004 Peter Curran <peter@closeconsultants.com>
Copyright (c) 2018 René Muhr <rene@team-rebellion.net>
Copyright (c) 2003-2012 Scott Ullrich <sullrich@gmail.com>
Copyright (c) 2008-2010 Seth Mos <seth.mos@dds.nl>
Copyright (c) 2024 Sheridan Computers Limited
Copyright (c) 2008 Shrew Soft Inc. <mgrooms@shrew.net>
Copyright (c) 2008 Tellnet AG
Copyright (c) 2010 Vinicius Coque <vinicius.coque@bluepex.com>
Copyright (c) 2014 Warren Baker <warren@decoy.co.za>
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.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER 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.

FreeBSD copyright notice


The compilation of software known as FreeBSD is distributed under the
following terms:

Copyright (c) 1992-2025 The FreeBSD Project.

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.

THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 4.4BSD and 4.4BSD-Lite software is distributed under the following
terms:

All of the documentation and software included in the 4.4BSD and 4.4BSD-Lite
Releases is copyrighted by The Regents of the University of California.

Copyright 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
    The Regents of the University of California.  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 acknowledgement:
This product includes software developed by the University of
California, Berkeley and its contributors.
4. Neither the name of the University nor the names of its contributors
   may be used to endorse or promote products derived from this software
   without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS 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 Institute of Electrical and Electronics Engineers and the American
National Standards Committee X3, on Information Processing Systems have
given us permission to reprint portions of their documentation.

In the following statement, the phrase ``this text'' refers to portions
of the system documentation.

Portions of this text are reprinted and reproduced in electronic form in
the second BSD Networking Software Release, from IEEE Std 1003.1-1988, IEEE
Standard Portable Operating System Interface for Computer Environments
(POSIX), copyright C 1988 by the Institute of Electrical and Electronics
Engineers, Inc.  In the event of any discrepancy between these versions
and the original IEEE Standard, the original IEEE Standard is the referee
document.

In the following statement, the phrase ``This material'' refers to portions
of the system documentation.

This material is reproduced with permission from American National
Standards Committee X3, on Information Processing Systems.  Computer and
Business Equipment Manufacturers Association (CBEMA), 311 First St., NW,
Suite 500, Washington, DC 20001-2178.  The developmental work of
Programming Language C was completed by the X3J11 Technical Committee.

The views and conclusions contained in the software and documentation are
those of the authors and should not be interpreted as representing official
policies, either expressed or implied, of the Regents of the University
of California.


NOTE: The copyright of UC Berkeley's Berkeley Software Distribution ("BSD")
source has been updated.  The copyright addendum may be found at
ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change and is
included below.

July 22, 1999

To All Licensees, Distributors of Any Version of BSD:

As you know, certain of the Berkeley Software Distribution ("BSD") source
code files require that further distributions of products containing all or
portions of the software, acknowledge within their advertising materials
that such products contain software developed by UC Berkeley and its
contributors.

Specifically, the provision reads:

"     * 3. All advertising materials mentioning features or use of this software
      *    must display the following acknowledgement:
      *    This product includes software developed by the University of
      *    California, Berkeley and its contributors."

Effective immediately, licensees and distributors are no longer required to
include the acknowledgement within advertising materials.  Accordingly, the
foregoing paragraph of those BSD Unix files containing it is hereby deleted
in its entirety.

William Hoskins
Director, Office of Technology Licensing
University of California, Berkeley

This website

The headings on this website use the Comfortaa typeface, under the SIL Open Font License 1.1:

Copyright 2011 The Comfortaa Project Authors (aajohan@gmail.com), with Reserved Font Name "Comfortaa".
This Font Software is licensed under the SIL Open Font License, Version 1.1.
This license is copied below, and is also available with a FAQ at:
http://scripts.sil.org/OFL


-----------------------------------------------------------
SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
-----------------------------------------------------------

PREAMBLE
The goals of the Open Font License (OFL) are to stimulate worldwide
development of collaborative font projects, to support the font creation
efforts of academic and linguistic communities, and to provide a free and
open framework in which fonts may be shared and improved in partnership
with others.

The OFL allows the licensed fonts to be used, studied, modified and
redistributed freely as long as they are not sold by themselves. The
fonts, including any derivative works, can be bundled, embedded, 
redistributed and/or sold with any software provided that any reserved
names are not used by derivative works. The fonts and derivatives,
however, cannot be released under any other type of license. The
requirement for fonts to remain under this license does not apply
to any document created using the fonts or their derivatives.

DEFINITIONS
"Font Software" refers to the set of files released by the Copyright
Holder(s) under this license and clearly marked as such. This may
include source files, build scripts and documentation.

"Reserved Font Name" refers to any names specified as such after the
copyright statement(s).

"Original Version" refers to the collection of Font Software components as
distributed by the Copyright Holder(s).

"Modified Version" refers to any derivative made by adding to, deleting,
or substituting -- in part or in whole -- any of the components of the
Original Version, by changing formats or by porting the Font Software to a
new environment.

"Author" refers to any designer, engineer, programmer, technical
writer or other person who contributed to the Font Software.

PERMISSION & CONDITIONS
Permission is hereby granted, free of charge, to any person obtaining
a copy of the Font Software, to use, study, copy, merge, embed, modify,
redistribute, and sell modified and unmodified copies of the Font
Software, subject to the following conditions:

1) Neither the Font Software nor any of its individual components,
in Original or Modified Versions, may be sold by itself.

2) Original or Modified Versions of the Font Software may be bundled,
redistributed and/or sold with any software, provided that each copy
contains the above copyright notice and this license. These can be
included either as stand-alone text files, human-readable headers or
in the appropriate machine-readable metadata fields within text or
binary files as long as those fields can be easily viewed by the user.

3) No Modified Version of the Font Software may use the Reserved Font
Name(s) unless explicit written permission is granted by the corresponding
Copyright Holder. This restriction only applies to the primary font name as
presented to the users.

4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
Software shall not be used to promote, endorse or advertise any
Modified Version, except to acknowledge the contribution(s) of the
Copyright Holder(s) and the Author(s) or with their explicit written
permission.

5) The Font Software, modified or unmodified, in part or in whole,
must be distributed entirely under this license, and must not be
distributed under any other license. The requirement for fonts to
remain under this license does not apply to any document created
using the Font Software.

TERMINATION
This license becomes null and void if any of the above conditions are
not met.

DISCLAIMER
THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
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OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
OTHER DEALINGS IN THE FONT SOFTWARE.