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elvisimprsntr's avatar
elvisimprsntr
Aspirant
Mar 11, 2017

LB1120 Public IP Address and DyDNS

BACKGROUND

 

I have a LB1120 with an ATT IoT SIM card installed.   I can connect to ATT LTE service.  My LB1120 is in bridge mode, which presumably means it is IP pass thru mode.    Unfortunately, when I connect to ATT using the LB1120, the LB1120 provides a private IP address to the router it is connected to.    I can confirm this, when heading to ping.eu to retreive the public IP address.   

 

PROBLEM

 

My router supports DyDNS, but the problem is the LB1120 provde a private IP address, my router will use the private IP address  to update the DNS records.  

 

QUESTIONS

 

1. Is this a bug in the firmware for the LB1120?

2. Or is this a limitation of the ATT IoT data service?

 

 

ATTAPN.jpeg

DyDNS
Firmware
Installation
LB1120
Public IP
Troubleshooting

2 Replies

  • stevesw's avatar
    stevesw
    NETGEAR Expert
    Mar 12, 2017

    Hi,

     

    As you stated, when in bridge mode, the LB1120 will pass thru the IP address rec'd from the LTE network.

    Whether that IP address is public or private will depend on how the APN used is setup by the network operator.

     

    From the table you provided, the ATT IoT APN will provide a private IP address.

    To obtain a public IP address, you will need to contact ATT about getting your subscription (SIM) updated to use a different APN.

     

    Steve

    • gloomymonkey's avatar
      gloomymonkey
      Aspirant
      Aug 26, 2017

      Hi,

       

      My LB1120 is in Bridge mode and it's passing a private network (10.207.163.44) to my router.  My router's LAN is set to 192.X.X.X with DynDNS setup.  LTE service is working fine, but i can't use FTP (from outside/public) with router's port forwarding to a PC.  This is working fine when using Comcast modem.