Cannot use port forwarding on TPG modem VX220-G2v

[binhdo26]

Our business recently registered NBN 100 Mbps plan for our business address. We have a static public IP comes with the plan. 

I want to set up Port Forwarding on the TPG modem VX220-G2v for port 8080 from internet to forward to port 80 of a service running on a server. The server has a fixed local IP assigned by TPG modem (I can ping the server from other PCs in the same LAN). Seems the configuration is set up correctly but I cant access the http://public_ip:8080 to connect to the local server on port 80. 

Here is the virtual servers that I've created at NAT Forwarding section in the router setting page.

I'm not sure TPG is blocking port forwarding somehow?  

[david64]

Hi @binhdo26 . When you define the rule, is the interface name you have specified the active interface name in the router status display?

[binhdo26]

Hi @david64 , yes, that's correct. The interface name that I have specified is the active interface name displayed on my router. Actually, there is only one interface "pppoe_2_3" appears there, so I can't seem to select wrong there

[david64]

@binhdo26 . From one of the other PCs, can you do:

telnet local_ipaddress 80

If you get a blank window, means the PC has connected to the port 80 server.

[binhdo26]

@david64 It works! I believe the server that has service is running on port 80 can be accessed through LAN normally. Also, the server doesn't has firewall at all which I think it's not the cause to block the connection. 

[david64]

@binhdo26 . When you try to connect using mobile data  http://public_ip:8080  what message do you get in your browser?  How quickly does it come back?

Any difference if you try port 8081?

[binhdo26]

@david64 It's saying "the site can't be reached. Took too long to responsd". I do test "telnet public_ip 8080", it didn't work and return connection failed. It means the port wouldn't be opened. See the telnet testing 

I can access the site through LAN normally. I tested opening with several other ports such as 8180, 8081, or 8280 to forward to 80 in LAN. None of them works! 

Also, I tested with other services on LAN, e.g. 24171 on another server, and try setup Port Forwarding to forward to this 24171 port. It still the same, not working at all!

[david64]

@binhdo26 . Can you login to router and check that its WAN ip address matches what you are using.

From your LAN computer, see if you can ping the WAN ip address.

If you can, do telnet test to WAN ip address.

[binhdo26]

I'm 100% sure that the WAN IP address on the router matches what I'm using. I can ping the router's WAN IP from outside, and even from LAN computer as well. Ping is working as you can see, but telnet to any ports I opened wouldn't work

[david64]

@binhdo26 . Can you look through router config. Is there any setting for CWMP? If enabled, can you try disabling it.

From the internet, can you try connecting to port 7547.

I have read somewhere that CWMP conflicts with port forwarding.

I have setup same rule on my VR1600 and I can see the connection request from my mobile browser reach my computer, using Wireshark.

What is firmware version of your VX220?