Tenda V1200 - Page 46

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Parameter
Description
Enable Fullcone 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.
Dial on demand (with idle
timeout timer)
When there is no data exchange within the specified time, the device
disconnects the connection between its WAN port and the ISP. Flow-based
charging users can select this option to save cost. Month-based charging users
do not need to select the option.
Enable Firewall
Check this option to enable the firewall of the modem router.
PPP IP extension
If this option is selected:

The NAT and firewall functions are disabled.

Only a computer in LAN can obtain the IP address which is the same as
that of the WAN port to access the internet. Other compurters cannot
obatin IP addresses to access the internet.
Use Static IPv4 Address
It is used to set up the IPv4 IP address assigned by the ISP after the PPPoE
dial-up succeeds. Do not set up it if you are not instructed by a professional.
Use Static IPv6 Address
It is used to set up the IP address assigned by the ISP after the PPPoE dial-up
succeeds. Do not set up it if you are not instructed by a professional.
Enable IPv6 Unnumbered
Model
It is used to enable the IPv6 unnumbered model. If your ISP is not required to
select it, keep the default.
Launch Dhcp6c for Address
Assignment (IANA)
If it is enabled, the device obtains the IPv6 WAN address using the stateful
DHCPv6 type.
Launch Dhcp6c for Prefix
Delegation (IAPD)
If it is enabled, the device gets the IPv6 prefix form the DHCPv6 server, and
delivers it to its LAN ports.
Enable PPP Debug Mode
If it is enabled, you can check the PPPoE dial-up information on the System
Log page. It is used to diagnose dial-up malfunctions.
Bridge PPPoE Frames Between
WAN and Local Ports
If it is enabled, computers in LAN can share the WAN connection for internet
access, use multiple active PPPoE accounts to access the internet (if any).
Enable IGMP Multicast Proxy
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.
Enable MLD Multicast Proxy
It is used to enable the MLD multicast proxy.
Step 7 Leave the configuration unchanged on Routing - Default Gateway page, and click Next.