TRENDnet TW100-S4W1CA User Manual page 42

2-2-6 Dynamic DNS
The Dynamic DNS feature allows you to host a server (Web, FTP, Game
Server, etc.) using a host name with your dynamically assigned IP address.
Most broadband Internet Service Providers assign dynamic IP addresses.
When you use a Dynamic DNS service provider, your friends can enter
your host name to connect to your server, no matter what your IP
address

Use Dynamic DNS
Check this option to enable Dynamic DNS.

Service Provider
Select a Dynamic DNS service provider from the dropdown list.

Host Name
Enter the host name your Dynamic DNS service provider has
assigned to you; for example: myhost.mydomain.net.

User Name
is.