User’s Guide 89
CHAPTER 8 The NAT Configuration Screens
8.1 Overview
Use these screens to configure port forwarding and trigger ports for the WiMAX
Modem. You can also enable and disable SIP, FTP, and H.323 ALG.
Network Address Translation (NAT) maps a host’s IP address within one network
to a different IP address in another network. For example, you can use a NAT
router to map one IP address from your ISP to multiple private IP addresses for
the devices in your home network.
8.1.1 What You Can Do in This Chapter
•The General screen (Section 8.2 on page 89) lets you enable or disable NAT
and to allocate memory for NAT and firewall rules.
•The Port Forwarding screen (Section 8.3 on page 90) lets you look at the
current port-forwarding rules in the WiMAX Modem, and to enable, disable,
activate, and deactivate each one.
•The Trigger Port screen (Section 8.4 on page 94) lets you maintain trigger port
forwarding rules for the WiMAX Modem.
•The ALG screen (Section 8.5 on page 96) lets you enable and disable SIP
(VoIP), FTP (file transfer), and H.323 (audio-visual) ALG in the WiMAX Modem.
8.2 General
Click ADVANCED > NAT Configuration > General to enable or disable NAT and
to allocate memory for NAT and firewall rules.