Determining the IPTABLE naming for the interfaces available on my device.

The following will show you how to determine the name of the interface you wish to apply IPTABLES to:

 

Interface

IP Table Naming

USB Cell (/cell)

qmimux0

Example iptables -A Input -i qmimux0 -j ACCEPT

Ethernet 0 (/n)

eth0

Example iptables -A INPUT -i eth0 -j ACCEPT

Ethernet 1 (/n1)

eth1

Example iptables -A INPUT -i eth1 -j ACCEPT

Serial Cell (/cell)

ppp0

Example iptables -A INPUT -i ppp0 -j ACCEPT

 

To determine what type of cell modem your unit has issue a “/j*”.

Look for the Modem Model. If a “-U” appears at the end of the modem model you have a USB modem. If the “-U” does not appear you have a serial modem.

 

        PARAMETER         |              VALUE               |

--------------------------+----------------------------------+

Product                   | REM-4R4-1-NE                     |

SW Version                | 7.03 2 Mar 2022                  |

Serial Number             | 01187556354                      |

Asset Tag                 | (undefined)                      |

Analog Modem Phone Number | (undefined)                      |

Modem Installed           | Yes, 4G/LTE, USB                 |

Modem Model               | MTSMC-L4N1-U                     |

GIG / DUAL-PHY            | Yes / Yes                        |

CPU / Board Program Date  | ARM / 7 May 2020                 |

RAM / FLASH               | 512 MB / 128 MB*                 |

Line Input Count / Rating | 1  / 15 Amps                     |

Current Monitor           | No                               |

Key Length                | 2048                             |

System Uptime             | 18h, 49m, 01s                    |

MAC Address [eth0]        | 00-09-9b-02-af-81                |

MAC Address [eth1]        | 00-09-9b-02-af-82