DynDNS on Zyxel USG FLEX / ATP: step-by-step setup
Zyxel firewalls (USG FLEX, ATP, USG) offer a freely configurable client for any DynDNS2 provider via the "User customize" DDNS provider. With DNS Beacon your firewall stays reachable under a permanent hostname even when your WAN IP changes. Here's how to set it up.
Step by step
- Open the admin interface of your Zyxel USG FLEX / ATP and go to Configuration → System → DDNS.
- Enter the values below. Your username is your account email, your password is an API key from the dashboard.
- Save the settings. Your hostname now updates automatically whenever your IP changes — usually within a minute.
Settings to enter
Configuration → System → DDNS
- DDNS Provider:
- User customize
- Server / Host:
- api.dnsbeacon.com
- URL:
- /nic/update?hostname=<domain>&myip=<ipaddr>
- Domain Name:
- myhouse.dnsfollowme.uk
- Username:
- your email address
- Password:
- your API key
Pick "User customize" as the DDNS Provider. Zyxel substitutes <domain> with the Domain Name and <ipaddr> with the WAN IP; Username and Password are sent as authentication to /nic/update. The trailing "?" in the URL is required.
Need a free hostname first?
Create a free DNS Beacon account, add a hostname and generate an API key — then come back and finish the setup above.
Create free account