Fortinet FortiGate Series Administration Guide

System Network Configuring the modem interface
FortiGate Version 4.0 MR1 Administration Guide
01-410-89802-20090903 201
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To configure the modem in Redundant mode, see “Redundant mode configuration” on
page 201.
To configure the modem in Standalone mode, see “Standalone mode configuration” on
page 202.
Redundant mode configuration
In redundant mode the modem interface backs up a selected ethernet interface. If that
ethernet interface disconnects from its network, the modem automatically dials the
configured dialup accounts. When the modem connects to a dialup account, the FortiGate
unit routes IP packets normally destined for the selected ethernet interface to the modem
interface.
Dial Now/Hang Up (Standalone mode only) Select Dial Now to manually connect to a dialup
account. If the modem is connected, you can select Hang Up to
manually disconnect the modem.
Mode Select Standalone or Redundant mode.
Auto-dial
(Standalone mode)
Select to dial the modem automatically if the connection is lost or the
FortiGate unit is restarted.
You cannot select Auto-dial if Dial on demand is selected.
Dial on demand
(Standalone mode)
Select to dial the modem when packets are routed to the modem
interface. The modem disconnects after the idle timeout period if there is
no network activity.
You cannot select Dial on demand if Auto-dial is selected.
Idle timeout
(Standalone mode)
Enter the timeout duration in minutes. After this period of inactivity, the
modem disconnects.
Redundant for
(Redundant mode)
Select the ethernet interface for which the modem provides backup
service.
Holddown
Timer
(Redundant mode)
(Redundant mode only) Enter the time (1-60 seconds) that the FortiGate
unit waits before switching back to the primary interface from the modem
interface, after the primary interface has been restored. The default is 1
second. Configure a higher value if you find the FortiGate unit switching
repeatedly between the primary interface and the modem interface.
Redial Limit The maximum number of times (1-10) that the FortiGate unit modem
attempts to reconnect to the ISP if the connection fails. The default redial
limit is 1. Select None to have no limit on redial attempts.
Wireless Modem Display a connected wireless modem if available.
Supported Modems Select to view a list of supported modems.
Usage History Display connections made on the modem interface. Information
displayed about connections includes:
• date and time
• duration of the connection in hours, minutes, and seconds
• IP address connected to
• traffic statistics including received, sent, and total
• current status of the connection
Dialup Account Configure up to three dialup accounts. The FortiGate unit tries
connecting to each account in order until a connection can be
established.
The active dialup account is indicated with a green check mark.
Phone Number The phone number required to connect to the dialup account. Do not add
spaces to the phone number. Make sure to include standard special
characters for pauses, country codes, and other functions as required by
your modem to connect to your dialup account.
User Name The user name (maximum 63 characters) sent to the ISP.
Password The password sent to the ISP.

Fortinet FortiGate Series Specifications

General

Brand	Fortinet
Model	FortiGate Series
Category	Firewall
Language	English