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Chapter 11
NAT Forwarding
Modem router’s NAT (Network Address Translation) feature makes the devices in the
LAN use the same public IP address to communicate in the Internet, which protects the
local network by hiding IP addresses of the devices. However, it also brings about the
problem that external host cannot initiatively communicate with the specified device
in the local network.
With forwarding feature the modem router can penetrate the isolation of NAT and
allows the external hosts in the Internet to initiatively communicate with the devices in
the local network, thus to realize some special functions.
TP-LINK modem router includes four forwarding rules. If two or more rules are set, the
priority of implementation from high to low is Virtual Servers, Port Triggering, UPNP
and DMZ.
This chapter contains the following sections:
• Share Local Resources in the Internet by Virtual Server
• Open Ports Dynamically by Port Triggering
• Make Applications Free from Port Restriction by DMZ
• Make Xbox Online Games Run Smoothly by UPnP