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Shell script to update Hurricane Electric DDNS hosts.
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README.md

HE Dynamic DNS Updater

This script will update A and AAAA records on Hurricane Electric's DNS for hosts with DDNS enabled. It will pull your IPv4 from a source and your IPv6 from the local machine.

It also includes two files, getv4.php and getv4.sh; which will allow you to run your own IP check service for IPv4 on a pfSense box if it also has the public v4 you want to use. If it's behind a bridge or DMZ, you'll have to use an external service.

Installation & Usage

If you are using the pfSense IP Check Service, copy both the .sh and .php file in to /usr/local/www. It will be available at

depending on if you use https or not.

Copy hedyn.sh to your server using the hostname; then make a copy of it if you're updating/hosting multiple names. Edit the script with your hostname, APIKey, the device you want to use for IPv6, and which IPv4 check service you want to use. Add it to cron.

The script will only update either v4 or v6 if the records don't match the machine's IP addresses.

To use with just v4 or just v6; comment out the appropiate parts.

Caution

This comes with no warranty. Any usage or modification to pfSense is done at your own risk.

Changelog

10-APR-2023: Initial Version

License

BSD 3-Clause License

Copyright (c) 2023, Jay Moore

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. Neither the name of the copyright holder 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 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.