A Typical Routing Scenario - D-Link NetDefend DFL-210 User Manual

4.2.1. The Principles of Routing
This parameter usually doesn't need to be specified. If it is specified, NetDefendOS responds to
ARP queries sent to this address. A special section below explains this parameter in more depth.
Local IP Address and Gateway are mutually exclusive and either one or the other should be
specified.
• Metric
This is a metric value assigned to the route and is used as a weight when performing
comparisons between alternate routes. If two routes are equivalent but have different metric
values then the route with the lowest metric value is taken.
The metric value is also used by Route Failover and Route Load Balancing.
For more information, see Section 4.4, "Route Load Balancing" and Section 4.2.3, "Route
Failover".

A Typical Routing Scenario

The diagram below illustrates a typical NetDefend Firewall usage scenario.
Figure 4.1. A Typical Routing Scenario
In the above diagram, the LAN interface is connected to the network 192.168.0.0/24 and the DMZ
interface is connected to the network 10.4.0.0/16. The WAN interface is connected to the network
195.66.77.0/24 and the address of the ISP gateway to the public Internet is 195.66.77.4.
The associated routing table for this would be as follows:
Route #
1
2
3
Interface Destination
lan 192.168.0.0/24
dmz 10.4.0.0/16
wan 195.66.77.0/24
133
Chapter 4. Routing
Gateway