Use TCPdump to verify the port proxy rule.
Log into NetCloud Manager.
Select in the left-side navigation panel.
Select the desired router.
Select the menu and then select .
Select Open Console.
In the console, enter the following:
Devices
A list of interface names displays.
From the list, identify the the interface name.
Enter the following:
tcpdump -i [WAN Iface name]
Ensure that traffic intended for the port specified in the rule is being forwarded through the WAN interface.