#atom

Free dynamic DNS service with simple API

Core Idea: A free dynamic DNS service that allows users to assign a subdomain of duckdns.org to a device with a changing IP address, enabling consistent remote access.

Key Elements

Key Features

• Free service with no account expiration
• Provides subdomains under duckdns.org
• Simple API for updating IP addresses
• Supports both IPv4 and IPv6
• Open-source client implementations

Technical Specifications

• Uses HTTP/HTTPS requests for IP updates
• Requires a token-based authentication system
• Update interval typically every 5 minutes
• No required client software (can use curl or wget)

Use Cases

• Home servers with dynamic IP addresses
• IoT devices requiring remote access
• Self-hosted services (web servers, game servers, VPNs)
• Remote access to home networks

Implementation Steps

1. Create an account on duckdns.org
2. Choose a subdomain name (yourname.duckdns.org)
3. Obtain the account token
4. Set up automatic IP updates using one of the following methods:

Basic Update Command

curl "https://www.duckdns.org/update?domains=YOURSUBDOMAIN&token=YOUR-TOKEN&ip="

Automated Update Script (Linux)

#!/bin/bash
DOMAIN="yoursubdomain"
TOKEN="your-token-here"

echo url="https://www.duckdns.org/update?domains=$DOMAIN&token=$TOKEN&ip=" | curl -k -o ~/duckdns/duck.log -K -

Additional Connections

• Broader Context: Dynamic DNS (Duck DNS is an implementation of dynamic DNS technology)
• Applications: Home Server Setup (common use case for Duck DNS)
• See Also: DynDNS (commercial alternative), No-IP (similar service)

References

1. Duck DNS official website: https://www.duckdns.org/
2. Duck DNS installation guides: https://www.duckdns.org/install.jsp

#dynamic-dns #networking #self-hosting #dns

Connections:

Sources:

• From: Worklog n8n.guiom.dev