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Configuring the networks
Configuring the networks
Configuring the Modem interface
Next steps
36
If you are running the FortiGate unit in NAT/Route mode, your networks must be
configured to route all Internet traffic to the IP address of the FortiGate interface to
which they are connected.
•
For the internal network, change the default gateway address of all computers and
routers connected directly to your internal network to the IP address of the
FortiGate internal interface.
•
For the DMZ network, change the default gateway address of all computers and
routers connected directly to your DMZ network to the IP address of the FortiGate
DMZ interface.
•
For the external network, route all packets to the FortiGate WAN1 or WAN 2
interface.
If you are using the FortiGate unit as the DHCP server for your internal network,
configure the computers on your internal network for DHCP.
Make sure that the connected FortiGate unit is functioning properly by connecting to
the Internet from a computer on the internal network. You should be able to connect to
any Internet address.
In NAT/Route mode, you use the modem interface as either a redundant interface or
standalone interface to the Internet.
•
In redundant 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.
When connecting to the ISP, in either configuration, the FortiGate unit modem can
automatically dial up to three dialup accounts until the modem connects to an ISP.
The modem interface connects to the FortiGate USB interface. You must connect an
external modem to the USB interface.
You can use the following information to configure FortiGate system time, to register
the FortiGate unit, and to configure antivirus and attack definition updates.
Refer to the FortiGate Administration Guide for complete information on configuring,
monitoring, and maintaining the FortiGate unit.
01-28008-0018-20050128
NAT/Route mode installation
Fortinet Inc.
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