Chapter 13. Nat Forwarding - TP-Link Archer VR2100 User Manual

Chapter 13
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.
The modem router can use a forwarding feature to remove the isolation of NAT and
allow external internet hosts to intuitively communicate with the devices in the local
network, thus enabling some special features.
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:
• Translate Address and Port by ALG
• Share Local Resources over 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