NAT/Route mode installation

Configuring the FortiGate unit

Connecting the FortiGate unit to the network(s)

50A

100

1

2

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When you have completed the initial configuration, you can connect the FortiGate unit between your internal network and the Internet.

The following network connections are available on the FortiGate unit:

Internal for connecting to your internal network

External or WAN1 for connecting to the Internet

Modem is the interface for connecting an external modem to the FortiGate-50A. You can configure the modem interface as a redundant interface or stand alone interface to the Internet. For details on configuring the modem interface, see “Configuring the modem for the FortiGate-50A” on page 53.

DMZ for connecting to a DMZ network. You can also connect both the external and DMZ interfaces to different Internet connections to provide a redundant connection to the Internet.

To connect the FortiGate unit

Connect the Internal interface to the hub or switch connected to your internal network.

Connect the External or WAN1 interface to the Internet.

Connect to the public switch or router provided by your ISP. If you are a DSL or cable subscriber, connect the External interface to the internal or LAN connection of your DSL or cable modem.

Optionally connect the DMZ interface to your DMZ network.

You can use a DMZ network to provide access from the Internet to a web server or other server without installing the servers on your internal network.

Configuring the networks

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 interface where the networks 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 external 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 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.

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FortiGate-50A/50B, FortiWiFi-50B and FortiGate-100 FortiOS 3.0 MR4 Install Guide

01-30004-0265-20070831

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Fortinet 50A/50B Connecting the FortiGate unit to the networks, Configuring the networks, To connect the FortiGate unit