Question

I have an RUT240 that has DDOS set up. I can ping lan port, and get a strong cellular connection. I have enabled ICMP on the WAN, but cannot ping the published WAN IP. Is there something obvious I'm missing?

Answer 1

Hello,

Ping should be enabled by default in Teltonika devices. 

Does the RUT240 actually get assigned with a public IP? What is the IP that is shown in Network -> Interfaces for MOB1S1A1 interface?

Best regards,

Comments

The IP is 100.111.182.127

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This address belongs to a Carrier Grade NAT (CGNAT) address space, which means that it is an intermediate address between your local network and public internet. It cannot be routed through internet and cannot be pinged remotely.

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Thank you!  Does this mean I can NOT use DDNS and port forwarding to access our device remotely behind this router?

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Unfortunately, not. 

However, if you have not tried, you could check RMS service, which allows to manage your device without public IP. 

Another suggestion would be to use ZeroTier VPN service, as it works without a public IP too.

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Thank you very much!  I will check those out!