Policy And Static Routes; Policy And Static Routes Overview; What You Can Do In This Chapter - ZyXEL Communications ZYWALL USG 20 Manual

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13.1 Policy and Static Routes Overview

Use policy routes and static routes to override the ZyWALL's default routing
behavior in order to send packets through the appropriate interface or VPN tunnel.
For example, the next figure shows a computer (A) connected to the ZyWALL's
LAN interface. The ZyWALL routes most traffic from A to the Internet through the
ZyWALL's default gateway (R1). You create one policy route to connect to services
offered by your ISP behind router R2. You create another policy route to
communicate with a separate network behind another router (R3) connected to
the LAN.
Figure 184 Example of Policy Routing Topology
A
R3
Note: You can generally just use policy routes. You only need to use static routes if
you have a large network with multiple routers where you use RIP or OSPF to
propagate routing information to other routers.

13.1.1 What You Can Do in this Chapter

• Use the Policy Route screens (see
configure policy routes.
ZyWALL USG 20/20W User's Guide

Policy and Static Routes

LAN
R1
WAN
R2
Section 13.2 on page 300) to list and
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