Fortinet FortiGate 100 - Manual (Page 116)

116
Fortinet Inc.
Adding a default route Network configuration
Adding a default route
Use the following procedure to add a default route for network traffic leaving the
external interface.
1 Go to System > Network > Routing Table.
2 Select New to add a new route.
3 Set the Source IP and Netmask to 0.0.0.0.
4 Set the Destination IP and Netmask to 0.0.0.0.
5 Set Gateway 1 to the IP address of the routing gateway that routes traffic to the
Internet.
6 Select OK to save the default route.
Adding destination-based routes to the routing table
Use the following procedure to add destination-based routes to the FortiGate routing
table. Add destination-based routes to control the destination of traffic exiting the
FortiGate unit. You configure routes by adding destination IP addresses and netmasks
and adding gateways for these destination addresses. The gateways are the next hop
routers to which to route traffic that matches the destination addresses in the route.
You can add one or two gateways to a route. If you add one gateway, the FortiGate
unit routes the traffic to that gateway. You can add a second gateway to route traffic to
the second gateway if the first gateway fails.
To support routing failover, the IP address of each gateway must be added to the ping
server of the interface connected to the same network as the gateway. See
“Adding a
ping server to an interface” on page 111 .
Adding destination-based routes to the routing table
1 Go to System > Network > Routing Table.
2 Select New to add a new route.
3 Type the Destination IP address and netmask for the route.
4 Add the IP address of Gateway #1.
Gateway #1 is the IP address of the primary destination for the route.
Gateway #1 must be on the same subnet as a Fortigate interface.
If you are adding a static route from the FortiGate unit to a single destination router,
you only need to specify one gateway.
5 Optionally, add the IP address of Gateway #2 if want to route traffic to multiple
gateways.
Note: Only 1 default route can be active at any 1 time. If two default routes are added to the
routing table, only the default route closest to the top of the routing table is active.