Routing; Policy And Static Routes Overview; What You Can Do In This Chapter; Chapter 10 Routing - ZyXEL Communications ZyWall USG20-VPN User Manual

10.1 Policy and Static Routes Overview

Use policy routes and static routes to override the USG'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 USG's LAN interface. The USG
routes most traffic from A to the Internet through the USG'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 150 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.

10.1.1 What You Can Do in this Chapter

• Use the Policy Route screens (see
• Use the Static Route screens (see
C
HAPTER
LAN
WAN
Section 10.2 on page
Section 10.3 on page
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Routing

R1
R2
229) to list and configure policy routes.
236) to list and configure static routes.
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