4. Click the “Ok” button to save the settings.
And now, when your friends want to visit the FTP server, they only need to
enter ftp://xxx.xxx.xxx.xxx:21 in the address field. Here, xxx.xxx.xxx.xxx
means the router’s WAN IP address. For example, when your router’s
WAN IP address is 210.242.6.221; your friends need to enter
ftp:// 210 . 242 . 6.221 :21 in the address field.
NOTE:
If you set the service port of the virtual server as 80, you must set the Web
management port on Remote Web Management screen to be any value
except 80 such as 8080. Otherwise, there will be a conflict to disable the
virtual server.