Fortinet FortiGate FortiGate-100 Installation Manual page 33

NAT/Route mode installation
FortiGate-100 Installation Guide
Note: 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:
1 Connect the Internal interface to the hub or switch connected to your internal network.
2 Connect the External interface to the Internet.
Connect to the public switch or router provided by your Internet Service Provider. If
you are a DSL or cable subscriber, connect the External interface to the internal or
LAN connection of your DSL or cable modem.
3 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.
Figure 9: FortiGate-100 NAT/Route mode connections
Internal Network
Hub or Switch
Internal
FortiGate-100
Internet
DMZ
POWER
INTERNAL EXTERNAL DMZ
STATUS
External
Public Switch
or Router
01-28004-0019-20040830
Reconnecting to the web-based manager
DMZ Network
Web Server
Mail Server
Hub or Switch
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