Adding upstream version 20221223.upstream/20221223upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 170 insertions, 0 deletions

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+.. Open Infrastructure: service-tools
+
+.. Copyright (C) 2014-2022 Daniel Baumann <daniel.baumann@open-infrastructure.net>
+..
+.. SPDX-License-Identifier: GPL-3.0+
+..
+.. This program is free software: you can redistribute it and/or modify
+.. it under the terms of the GNU General Public License as published by
+.. the Free Software Foundation, either version 3 of the License, or
+.. (at your option) any later version.
+..
+.. This program is distributed in the hope that it will be useful,
+.. but WITHOUT ANY WARRANTY; without even the implied warranty of
+.. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+.. GNU General Public License for more details.
+..
+.. You should have received a copy of the GNU General Public License
+.. along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+===================
+dehydrated-nsupdate
+===================
+
+---------------------------------------
+dehydrated hook for dns-01 verification
+---------------------------------------
+
+:manual section: 1
+:manual group: Open Infrastructure
+
+Synopsis
+========
+
+| **dehydrated-nsupdate**
+
+Description
+===========
+
+**dehydrated** is a client for ACME-based Certificate Authorities, such as LetsEncrypt. It can be used to request and obtain TLS certificates from an ACME-based certificate authority.
+
+The **dehydrated-nsupdate** hook implements the dns-01 verification. It is typically run together with **dehydrated-hook** as:
+
+|
+| /etc/dehydrated/hook.d/deploy_challenge.nsupdate
+| /etc/dehydrated/hook.d/clean_challenge.nsupdate
+
+Features
+========
+
+**dehydrated-nsupdate** has the following features:
+
+Automatic nameserver detection (IPv4 and IPv6)
+----------------------------------------------
+
+dehydrated-nsupdate automatically finds and updates all authoritative nameservers for a given record by looking up the records in the DNS by itself, supporting IPv6-only, IPv4-only, and dual-stacked environments.
+
+Proper CNAME support
+--------------------
+
+dehydrated-nsupdate follows CNAMEs delegating the TXT record update to another zone.
+
+Handling nameserver subzone shortcuts
+-------------------------------------
+
+dehydrated-nsupdate correctly handles authoritative nameserver answers that (wrongly) give shortcut answers for their own zones when using multiple authoritative subzones on the same nameservers.
+
+TSIG support
+------------
+
+dehydrated-nsupdate uses TSIG, if provided, to authenticate itself to the nameserver. Additionally to a global TSIG to be used for all record updates, separate TSIGs can individually be specified per record, per zone, and per nameserver.
+
+Proper removal of TXT records
+-----------------------------
+
+dehydrated-nsupdate removes records after succesfull verification.
+
+bind9-dnsutils and knot-dnsutils support
+----------------------------------------
+
+dehydrated-nsupdate works with both nsupdate (bind9) and knsupdate (knot).
+
+IDN handling
+------------
+
+dehydrated-nsupdate works with IDN domains by not expanding the punycode to update the correct records.
+
+Usage
+=====
+
+dehydrated-hook(1) is a prerequisite for dehydrated-nsupdate.
+
+Installation
+------------
+
+| sudo echo CHALLENGETYPE="dns-01" > /etc/dehydrated/conf.d/zz-challengetype.sh
+| sudo ln -s /usr/bin/dehydrated-nsupdate /etc/dehydrated/hook.d/deploy_challenge.nsupdate
+| sudo ln -s /usr/bin/dehydrated-nsupdate /etc/dehydrated/hook.d/clean_challenge.nsupdate
+
+Removal
+-------
+
+| sudo rm -f /etc/dehydrated/conf.d/zz-challengetype.sh
+| sudo rm -f /etc/dehydrated/hook.d/deploy_challenge.nsupdate
+| sudo rm -f /etc/dehydrated/hook.d/clean_challenge.nsupdate
+
+Configuration
+=============
+
+Depending on the nameserver requirements, dehydrated-nsupdate can send record updates either unauthenticated or using a TSIG (recommended).
+
+A TSIG file consists of one single line containing the key (nsupdate/knsupdate do not allow comments), e.g.:
+
+|
+| hmac-sha512:example:/LXPy6U8HAWA+QmvulZWm0owsQgNf8qJ5MNLTvirzvVtDb+PzLKoBmVHjnL6TUffkvRYa7Do448dSIrAuJ1G/A==
+
+Instead of using a global TSIG for all record update, specific TSIGs can be used individually per record, zone, and nameserver.
+
+The lookup hierarchy is the following (first match wins):
+
+|
+| /etc/dehydrated/tsig/${record}.key
+| /etc/dehydrated/tsig/${zone}.key
+| /etc/dehydrated/tsig/${nameserver}.key
+| /etc/dehydrated/tsig.key
+|
+| TSIG_KEYFILE variable in /etc/default/dehydrated-nsupdate/*
+| TSIG_KEYFILE variable in /etc/default/dehydrated-nsupdate
+
+In order to explicitly not use a TSIG for a specific record, zone, or nameserver, an empty keyfile or a keyfile with only comments can be used, e.g.:
+
+|
+| echo "# disabled" > /etc/dehydrated/tsig/ns1.example.org.key
+
+Files
+=====
+
+The following files are used:
+
+/etc/dehydrated/tsig.key:
+  default location for global TSIG key to be used.
+
+/etc/dehydrated/tsig/${record}.key, /etc/dehydrated/tsig/${zone}.key, /etc/dehydrated/tsig/${nameserver}.key:
+  default locations for specific TSIG keys to be used individually per record, zone, or nameserver.
+
+/etc/default/dehydrated-nsupdate, /etc/default/dehydrated-nsupdate.d/\*:
+  configuration file, currently only used for TSIG_KEYFILE variable pointing to the location of the global TSIG key to be used (default: /etc/dehydrated/tsig.key).
+
+See also
+========
+
+| dehydrated(1),
+| dehydrated-cron(1),
+| dehydrated-hook(1).
+
+Homepage
+========
+
+More information about service-tools and the Open Infrastructure project can be found on the homepage (https://open-infrastructure.net).
+
+Contact
+=======
+
+Bug reports, feature requests, help, patches, support and everything else are welcome on the Open Infrastructure Software Mailing List <software@lists.open-infrastructure.net>.
+
+Debian specific bugs can also be reported in the Debian Bug Tracking System (https://bugs.debian.org).
+
+Authors
+=======
+
+service-tools were written by Daniel Baumann <daniel.baumann@open-infrastructure.net> and others.