Tenda V1200 User Manual page 77

Step 5 Set other parameters as required, and click Next.
Parameter description
Parameter
Enable NAT
Enable Fullcone NAT
Enable Firewall
Enable IGMP Multicast Proxy
Step 6 Leave the configuration unchanged on Routing - Default Gateway page, and click Next.
Step 7 If your ISP provides you with the DNS IP addresses, select Use the following Static DNS IP
address, and enter the DNS IP addresses. If not, select the option Select DNS Server
Interface from available WAN interfaces, and click Next.
Description
It is used to enable the NAT.
Data transmitted by a computer in LAN through the UDP port A will be
forwarded to the UDP port B in WAN. And data received by the UDP port B in
WAN will be forwarded to the UDP port A of the corresponding computer in
LAN.
Check this option to enable the firewall of the modem router.
If it is enabled, the modem router can forward the multicast data to the users
in LAN. If you requires multicast applications, such as VOD or AOD, you can
enable this option.
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