How to set up your FortiWAN Configuring Network Interface (Network Setting)
As described in the UI, the subnet as a whole is assigned to Virtual Server for use. Enter subnet IP address in [Network
IP] and netmask 255.255.255.248 in [Netmask].
Note that the IP addresses (IPv4 or IPv6) specified to field [IP(s) on Localhost] can be used for NAT to transfer the
source IP address of packets to. The first IP address on the list of [IP(s) on Localhost] will be used for the NAT default
rules of the WAN link. System generates NAT default rules automatically for a WAN link so that a host with private IP
address in LAN can access Internet without setting NATrules manually. For FortiWAN V4.0.x, system does not
generate NAT default rules for IPv6 WAN links, setting NAT rules manually is required (See "NAT").
Examples of Static Routing Subnets
[Static Routing Subnet]: Subnet in WAN
This topology is rarely seen in actual network where static routing subnet is located on the WAN. In other words, the
subnet in WAN does not connect to FortiWAN directly, but needs a router instead to transfer packets. In this example,
a subnet 139.3.1.8/29 is located on the WAN and connects to router 203.69.118.9, while another subnet
203.69.118.8/29 is located on the WAN as well, but connects to FortiWAN directly. The configurations here indicate
how FortiWAN to route packets to subnet 139.3.1.8/29.
68 FortiWAN Handbook
Fortinet Technologies Inc.
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