Example Default Route To An External Network - Fortinet FortiGate 4000 User Manual

Transparent mode installation

Example default route to an external network

FortiGate-4000 Installation and Configuration Guide
Figure 23 shows a FortiGate unit where all destinations, including the management
computer, are located on the external network. To reach these destinations, the
FortiGate unit must connect to the "upstream" router leading to the external network.
To facilitate this connection, you must enter a single default route that points to the
upstream router as the next hop/default gateway.
Figure 23: Default route to an external network
DNS
Gateway IP 192.168.1.2
General configuration steps
1 Set the FortiGate unit to operate in Transparent mode.
2 Configure the Management IP address and Netmask of the FortiGate unit.
3 Configure the default route to the external network.
Internet
Upstream
Router
FortiGate-4000
Management IP 192.168.1.1
KVM/ACCESS
PWR/KVM STATUS
LAN 1 LAN 2
POWER ON/OFF
Internal Network
Transparent mode configuration examples
FortiResponse
Distribution
Network (FDN)
Management
Computer
75