Creating the Modem interface on the firewall

  1. In the menu Configuration > Network > Interfaces, click on Add.
  2. Select Add a modem.
  3. In the Modem ID section, name the interface.
  4. Click on Next.
  5. In the Configuration of the modem section, select "3G/4G" as the Modem type then enter the following parameters:
  • Name of access point: this is specific to each access provider and is given when you sign up for your 3G/4G subscription,
  • Number to dial: this is number that the modem has to dial in order to log on to the access provider's network. The default value is "99#",
  • IP address of the remote server: this address is given by your access provider,
  • PIN code of the SIM card: information given with your SIM card,
  • USB modem: the value Automatic detection is suggested by default.
    If your modem is not automatically recognized, choose one of the customized profiles (Custom modem 1 or Custom modem 2) then click on Configuration of the modem.
  1. In the window Configuration of the modem X, select Enable and enter the following parameters:
  • Name of the modem (for information only),
  • Model of the modem (for information only),
  • Vendor ID: enter the value of the VendorId parameter,
  • Initial product ID: enter the value of the ProductIdInit parameter.
  • MessageContent for modem mode, enter the value of the ModeSwitchString parameter.
  • Target product ID: enter the value of the ProductId parameter.
  • Configuration command port: this is the number of the serial port dedicated to sending configuration commands ("AT" commands) to the modem. The most common value is 0.
  • Monitoring command port: this is the number of the serial port dedicated to sending monitoring commands ("AT" commands) to the modem. The most common value is 1.
  • Initialization string no. 1: this string is optional. It allows "AT" configuration commands to be sent to the modem before it is used. Example: "ATZ" (modem reinitialization command), "AT^CURC=0" (command that allows periodic messages to be disabled).
  • Initialization string no. 2: this string is optional.
  • Initialization string no. 3: this string is optional.

SNS USB modem configuration

  1. Click on Apply then on Next.
  2. In the Authentication section, if necessary, enter the Username and Password for connecting to the access provider's services.
  3. Click on Next.
  4. In Routing: use the gateway obtained by the modem, choose if you are adding this gateway to the list of main gateways, the list of backup gateways or if you intend to choose later.
    Do note that 3G/4G traffic may be expensive depending on which telecoms operator you choose. This factor may help you in making your choice.
  5. Click on Next.
  6. Confirm the summary of the configuration by clicking on Finish.
  1. Disconnect your modem from the firewall's USB port.
  2. Reconnect your modem to the firewall's USB port.