Fortinet Gate 60D - Configuring the Modem Interface

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System Network Configuring the modem interface

FortiGate Version 4.0 Administration Guide

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Figure 67: Zone settings

Configuring the modem interface

All FortiGate models with a USB interface support USB modems, and FortiGate-50 series

and FortiGate-60 series modules include a serial modem port. In NAT/Route mode the

modem can be in one of two modes:

• In redundant (backup) mode, the modem interface automatically takes over from a

selected ethernet interface when that ethernet interface is unavailable.

• In standalone mode, the modem interface is the connection from the FortiGate unit to

the Internet.

In redundant or standalone mode when connecting to the ISP, you can configure the

FortiGate unit to automatically have the modem dial up to three dialup accounts until the

modem connects to an ISP.

Other models can connect to an external modem through a USB-to-serial converter. For

these models, you must configure modem operation using the CLI.

Initially modem interfaces are disabled, and must be enabled in the CLI to be visible in the

web-based manager. See the

system modem command in the FortiGate CLI Reference.

This section describes:

• Configuring modem settings

• Redundant mode configuration

• Standalone mode configuration

• Adding firewall policies for modem connections

• Connecting and disconnecting the modem

• Checking modem status

Zone Name Enter the name to identify the zone.

Block intra-zone traffic Select to block traffic between interfaces or VLAN subinterfaces in the

same zone.

Interface members Select the interfaces that are part of this zone. This list includes

configured VLANs.

Note: The modem interface is not the AUX port. While the modem and AUX port may

appear similar, the AUX port has no associated interface and is used for remote console

connection. The AUX port is only available on FortiGate models 1000A, 1000AFA2, and

3000A. For more information, see the

config system aux command in the

FortiGate CLI Reference.