Fortinet Fortigate-5000 series User Manual

System Network Configuring the modem interface
FortiGate Version 3.0 MR4 Administration Guide
01-30004-0203-20070102 93
To configure the modem in Redundant mode, see “Redundant mode
configuration” on page 93.
To configure the modem in Standalone mode, see “Standalone mode
configuration” on page 94.
Redundant mode configuration
The modem interface in redundant mode 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.
The FortiGate unit disconnects the modem interface and switches back to the
ethernet interface when the ethernet interface can again connect to its network.
There is an optional timeout setting, after which the modem will disconnect if there
is no network activity. This is useful in saving money on dialup connection
charges.
For the FortiGate unit to be able to switch from an ethernet interface to the
modem you must select the name of the interface in the modem configuration and
configure a ping server for that interface. You must also configure firewall policies
for connections between the modem interface and other FortiGate interfaces.
To configure redundant mode
1 Go to System > Network > Modem.
2 Select Redundant mode.
3 Enter the following information:
4 Select Apply.
5 Configure a ping server for the ethernet interface the modem backs up.
See “To add a ping server to an interface” on page 89.
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.
Note: Do not add policies for connections between the modem interface and the interface
that the modem is backing up.
Mode Redundant
Redundant for From the list, select the interface to back up.
Holddown timer Enter the number of seconds to continue using the modem after the
interface is restored.
Redial Limit Enter the maximum number of times to retry if the ISP does not
answer.
Dialup Account 1
Dialup Account 2
Dialup Account 3
Enter the ISP phone number, user name and password for up to
three dialup accounts.

Fortinet Fortigate-5000 series Specifications

General

Brand	Fortinet
Model	Fortigate-5000 series
Category	Firewall
Language	English