User's Manual

Chapter 7 General Tutorials
ISG50 User’s Guide
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Figure 102 Create Address Objects
2 Click Configuration > Network > NAT > Add.
Configure a name for the rule (WAN-LAN_H323 here).
You want the LAN H.323 device to receive peer-to-peer calls from the WAN and also be able to
initiate calls to the WAN so you set the Classification to NAT 1:1.
Set the Incoming Interface to wan1.
Set the Original IP to the WAN address object (WAN_IP-for-H323).
Set the Mapped IP to the H.323 device’s LAN1 IP address object (LAN_H323).
Set the Port Mapping Type to Port, the Protocol Type to TCP and the original and mapped ports
to 1720.
Click OK.