151 
 
 
Step 3  Register on the website of the selected DDNS service provider. 
Step 4  Choose Virtual Server > DDNS again, set DDNS provider, username, password, domain name and other 
information. 
 
Step 5  Click OK. 
---End 
14.4.3  Example of DDNS 
Networking requirement 
A company uses W15E to deploy its network environment, and the WAN IP of the router is dynamic. It requires 
that employees can access the company’s intranet resources with a fixed domain name when on business travel. 
Solution 
The  DDNS  function  is  recommended  to  address  this  requirement.  Establish  a  FTP  server  in  the  company’s