Port Forwarding Configuration
a. Create a port forwarding rule for the FTP server.
1.
Go to Network Setting> NAT > Port Forwarding and click "add new rule".
2.
Write the Service Name, e.g. "FTP".
3.
Select the WAN Interface, e.g. "ETHWAN".
4.
Enter the Server IP Address, e.g. "192.168.1.33".
5.
Click Apply.