DDNS
The dynamic DNS (DDNS) service resolves a fixed domain name to an IP address that may change frequently in real-time. That is, no matter when and how a user accesses the Internet at an IP address and no matter what the IP address is and whether the IP address is changed, the DDNS ensures that the user’s computer can be connected through a fixed domain name. This means that the computer under the DDNS service seems to have a fixed IP address and therefore can act as an Internet server.
Huawei ONTs support the following DDNS service providers: DynDNS, DynDNS-static, DynDNS-custom, QDNS, QDNS-static, GnuDIP, GnuDIP.HTTP, No-IP, DtDNS, EasyDNS, and Oray.
Configuration Example
If a user obtains a personal website domain name (www.abc13.com) from Dyndns, how does the user configure DDNS on a Huawei ONT to visit this personal website by the domain name?
Prerequisites
The Huawei ONT has been connected to the Internet.
Configuration Method
ONT web page, configure the DDNS function.

Note:
The web page may vary according to ONTs. The actual web page prevails.
WAN Name: It indicates the name of the WAN port for a network-side client to access an intranet host. Select a WAN port configured in port mapping.
Domain Name: Enter an obtained complete domain name. In this example, enter the following free domain name obtained from Dyndns: www.abc13.com.
Service Provider: Select the service provider corresponding to the domain name. In this example, select dyndns.
Host of the Service Provider: After you select a service provider, specify this field accordingly. In this example, enter members.dyndns.org.
Service Port: Enter the DDNS service port number. After Dyndns is specified, 80 is automatically displayed for this field.
User Name and Password: Enter the user name and password registered on the DDNS service provider website. In this example, enter the user name and password registered at the Dyndns website.
Encryption Mode: It is associated with the server and is unconfigurable. Different service providers may have different encryption modes for user names and passwords. To ensure information security, you are advised to select a service provider that provides a higher level of security. In descending order of security levels, encryption modes are MD5, Base64, no encryption respectively.
https://support.huawei.com/

