I bought a Raspberry Pi 4G/LTE Cellular Modem Kit and i cant reach the RPI from remote over TCP using the mobile network, here is my current situation:
- I’m using a Telit module LE910C1;
- The outbound connection over mobile network is working properly;
- the firewall of the RPI is deactivated completely
- The SIM card has a static public ip address.
- The static ip address is reachable from remote, if place in listening a socket by command AT#SKTL, the remote party can connect;
- The internal modem’s firewall, configurable by AT#FRWL, is allowing any address to go through with 0.0.0.0/0.0.0.0 configuration;
- When I try to reach the listening socket 8080,8081,8082 or 22 on the RPI, the connection is “RESET” from the remote party;
- I captured the traffic using TCPDUMP and RPI, unfortunately connection is not reaching the network layer of the RPI;
- I’ve read all the available AT commands from TELIT and I cannot find something useful for the purpose;
Question:
I would like to know how to configure the permissions for incoming connections using the mobile network.