DIR-320NRU Multifunction Wireless Router Supporting
WiMAX, 3G GSM/CDMA with Built-in Switch
User Manual
Parameter
NAT
Firewall
When all needed settings are configured, click the Save button.
Select the checkbox if you want one WAN IP address to be used for
all computers of your LAN.
Select the checkbox to enable protection against ARP and DDoS
attacks.
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Configuring via Web-based Interface
Description