Prefix List; New Prefix List - Fortinet FortiGate FortiGate-5001 Administration Manual

Router objects

Prefix list

New Prefix list

166
A prefix list is an enhanced version of an access list that allows you to control the
length of the prefix netmask.
Each rule in a prefix list consists of a prefix (IP address and netmask), the action to
take for this prefix (permit or deny), and maximum and minimum prefix length settings.
The FortiGate unit attempts to match a packet against the rules in a prefix list starting
at the top of the list. If it finds a match for the prefix, it takes the action specified for that
prefix. If no match is found the default action is deny.
For a prefix list to take effect it must be called by another FortiGate routing feature
such as RIP or OSPF.
Figure 75: Prefix list
Create New
Name
Action
Prefix
GE
LE
Delete, Add prefix-
list entry, and Edit
icons
Figure 76: Prefix list name configuration
To add a prefix list name
1 Go to Router > Router Objects > Prefix List.
2 Select Create New.
3 Enter a name for the prefix list.
4 Select OK.
Add a new prefix list name. An access list and a prefix list cannot have
the same name.
The prefix list name.
The action to take for the prefix in a prefix list entry.
The prefix in a prefix list entry.
The greater than or equal to number.
The less than or equal to number.
Delete, add, or edit a prefix list.
01-28008-0013-20050204
Router
Fortinet Inc.