ZyXEL Communications ZyWall USG 50-H Series User Manual page 264

Chapter 14 Virtual Servers
Figure 197 NAT 1:1 Example Policy Route
Click Network > Routing > Policy Route > Add and configure the screen as shown next. Be
careful of where you create the route as routes are ordered in descending priority.
Figure 198 Create a Policy Route
NAT 1:1 Firewall Rule
Create a firewall rule to allow access from the WAN zone to the mail server in the LAN1 zone.
Be careful of where you create the rule as firewall rules are ordered in descending priority.
264
LAN1
Source 192.168.1.1
SMTP
192.168.1.21
Source 1.1.1.1
NAT
SMTP
ZyWALL USG 50-H User's Guide