EC25 (linux usbnet driver) remote access via m2m sim (public dynamic address)

I’m using EC25 modem on a NXP microcontroller (linux) + m2m sim from vodafone Italy. The apn is for bidirectional public dynamic address (“”).
I successfully enstablish the data connection (from microcontroller to an ftp for example) and the pubblic address is visibile to the ping command, however I cannot access none of the linux ports (access denied) at that public address. How can I “connect” pubblic address to local linux active connection (at commands, linux commands,…?).
Thanks for your support, any help will be appreciated.
Best regards,


You can try to use quectel-CM to establish a data connection on Linux, and then use the AT command to access the public address. Before establishing a data connection, you need to install the module driver. Please refer to the attached document for operation.

Quectel_EC25&EC21_AT_Commands_Manual_V1.3.pdf (1.3 MB) Quectel_LTE&5G_Linux_USB_Driver_User_Guide_V2.0.pdf (564.5 KB)