Editing Dynamic DNS (section)

=== Installation and Configuration ===
==== 1. Installing ddclient ====
One of the most common tools for DDNS on Linux is <code>ddclient</code>, a Perl-based client for updating dynamic DNS entries.
* '''Installation:'''
<syntaxhighlight lang="bash">
sudo apt update
sudo apt install ddclient
</syntaxhighlight>
* '''Configuration:'''
The configuration file is usually located at <code>/etc/ddclient.conf</code>. Here is a sample configuration for using No-IP:

<pre>
protocol=dyndns2
use=web
server=dynupdate.no-ip.com
login=your-username
password=your-password
yourdomain.no-ip.org
</pre>

==== 2. Configuring the Service ====
After editing <code>/etc/ddclient.conf</code>, ensure ddclient runs on startup and is properly configured:
<syntaxhighlight lang="bash">
sudo systemctl enable ddclient
sudo systemctl restart ddclient
</syntaxhighlight>

==== 3. Router-based DDNS ====
Many consumer routers have built-in support for DDNS services like DynDNS, No-IP, and DuckDNS. The setup generally involves:
* Logging into the router’s web interface
* Navigating to the DDNS configuration section
* Selecting your DDNS provider
* Entering your account credentials
* Saving the configuration

This approach offloads the update task to the router, removing the need for a local client.