Fortinet MR8 manual Standalone mode configuration

Selecting a modem mode Configuring the modem interface

For the FortiGate unit 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.

Note: Do not add policies for connections between the modem interface and the interface that the modem is backing up.

To configure backup modeTo configure a redundant modem connection

1Go to System > Network > Modem.

2Select Redundant for the mode.

3From the Redundant for list, select the ethernet interface that you want the modem to back up.

4Configure other modem settings as required. “Configuring modem settings” on page 57.

5Configure a ping server for the ethernet interface selected in step 3. See “Defining a Ping Server” on page 59.

6Configure firewall policies for connections to the modem interface. See “Adding firewall policies for modem connections” on page 60.

Standalone mode configuration

In standalone mode, you manually connect the modem to a dialup account. The modem interface operates as the primary connection to the Internet. The FortiGate unit routes traffic through the modem interface, which remains permanently connected to the dialup account.

If the connection to the dialup account fails, the FortiGate unit automatically redials the modem. The modem redials the ISP number based on the amount of times specified by the redial limit, or until it connects to a dialup account.

In standalone mode the modem interface replaces the WAN1 or WAN2 ethernet interface. When configuring the modem, you must set Redundant for to the name of the ethernet interface that the modem interface replaces. You must also configure firewall policies for connections between the modem interface and other FortiGate interfaces.

Note: Do not add a default route to the ethernet interface that the modem interface replaces.

Note: Do not add firewall policies for connections between the ethernet interface that the modem replaces and other interfaces.

To operate in standalone mode

1Go to System > Network > Modem.

2From the Redundant for list, select the ethernet interface that the modem is replacing.

56 01-28008-0018-20050128 Fortinet Inc.