Fortinet fortigate-300 Installationsanweisungen

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.

Optionally connect the DMZ/HA interface to the 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 the internal network.

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 external interface.