Port forwarding not working

Port forwarding not working
Port forwarding not working
2020-05-31 06:04:03
Model: TL-MR3420
Hardware Version: V5
Firmware Version:

I am using Airtel 4G dongle(Huawei E3372 Firmware 21.x.x version) with TL-MR3420 and able to connect to Internet. However, port forwarding option is not working. 


I did enable port forward option using the below steps 

1) Setup a fixed ip address to CCTV camera ( which i need to accesss it from internet.

2) Setup port forwarding rules as below 

  • Virtual servers -> Service Type : HTTP , External Port : 8001,Internal IP :, Internal Port : 80,  Protocol : TCP & UDP (All)


When i tried to analyze this, it looks to me that 4G Dongle is getting external facing IP ( and it is assigning address to router (WAN Interface Name:   ppp_USB_3G, Default Gateway : . 


Please help me to setup the dongle / Router correctly so that Dongle works as modem only and Router gets external facign IP address.