154 Fortinet Inc.
Adding RIP filters RIP configuration
3Add the IP address of a neighbor router that you want the FortiGate unit to exchange
routing information with.
4Select Enable Send RIP1 to send RIP1 messages to the neighbor.
5Select Enable Send RIP2 to send RIP2 messages to the neighbor.
6Select OK to add the RIP neighbor to the list.
Adding RIP filters
Use RIP filters to control the routing information received by the FortiGate unit and
sent by the FortiGate unit. You can create filters for two purposes:
A RIP filter consists of the IP address and netmask of a route, the action the filter
should perform for this route (allow or deny), and the interface on which this filter entry
should be applied. Routes that do not match a route added to a RIP filter are allowed.
A single RIP filter contains instructions for allowing or denying a single route. You can
add multiple RIP filter entries under the same RIP filter name to create a RIP filter list.
Using a RIP filter list you can filter multiple routes.
After creating RIP filters and filter lists you can configure the neighbors filter or routes
filter by selecting a filter or filter list for each of these filter types. If you do not select a
RIP filter for neighbors or routes, no filtering is applied. You can add a total of four RIP
filters or RIP filter lists, but you can only have one active neighbors filter and one
active routes filter.
This section describes:
•Adding a single RIP filter
•Adding a RIP filter list
•Adding a neighbors filter
•Adding a routes filter

Adding a single RIP filter

Add a single RIP filter to filter a single route. You can apply a single RIP filter to the
neighbors or routes filter. You can add a total of four RIP filters or RIP Filter lists.
If you want to filter multiple routes, use a RIP filter list. See “Adding a RIP filter list” on
page 155.
1Go to System > RIP > Filter.
2Select New to add a RIP filter.
3Configure the RIP filter.
Neighbors filter For filtering routes received from neighboring routers. When the FortiGate
unit receives routes from a neighboring router, the neighbors filter defines
what routes received from the neighbor will be stored in the FortiGate routing
table and what routes will be discarded.
Routes filter For filtering routes before a routing table update is sent to neighboring
routers. Before the FortiGate unit sends routes to neighboring routers, the
routes filter defines what routes can be sent and what routes cannot be sent.