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Transparent mode
Transparent mode
Configuration options
22
Figure 6: Example NAT/Route multiple internet connection configuration
Port 1
204.23.1.5
Internet
Port 2
64.83.32.45
In Transparent mode, the FortiGate unit is invisible to the network. Similar to a
network bridge, all FortiGate interfaces must be on the same subnet. You only have to
configure a management IP address so that you can make configuration changes.
The management IP address is also used for antivirus and attack definition updates.
You typically use the FortiGate unit in Transparent mode on a private network behind
an existing firewall or behind a router. The FortiGate unit performs firewall functions,
IPSec VPN, virus scanning, IPS, web content filtering, and Spam filtering.
Figure 7: Example Transparent mode network configuration
Gateway to
public network
10.10.10.2
204.23.1.5
(firewall, router)
Internet
You can connect up to seven network segments to the FortiGate unit to control traffic
between these network segments.
•
LAN can connect to the internal firewall or router.
•
Ports 1 can connect to the external network.
•
Ports 2 to 6 can connect to other networks.
•
Port 4 can also connect to other FortiGate-500A units if you are installing an HA
cluster.
Once you have selected Transparent or NAT/Route mode operation, you can
complete the configuration plan and begin to configure the FortiGate unit. Choose
among three different tools to configure the FortiGate unit
01-28005-0101-20041015
FortiGate-500A Unit
in NAT/Route mode
CONSOLE
USB
LAN
Esc
Enter
L1
L2
L3
L4
1
2
A
NAT mode policies controlling
traffic between internal and
external networks.
FortiGate-500A Unit
in Transparent mode
CONSOLE
USB
Esc
Enter
L1
A
Port 2
Transparent mode policies
controlling traffic between
internal and external networks
Internal network
10/100
10/100/1000
3
4
5
6
LAN
192.168.1.1
10.10.10.1
Management IP
Internal network
LAN
10/100
10/100/1000
L2
L3
L4
1
2
3
4
5
6
Port 1
Getting started
192.168.1.3
10.10.10.3
Fortinet Inc.
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