TP-Link TD-W8968 TD-W8968 V1 User Guide - Page 32

TD-W8968, Advanced, MTU bytes, Enable NAT, Enable Fullcone NAT, Enable SPI Firewall, Enable

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TD-W8968 300Mbps Wireless N USB ADSL2+ Modem Router User Guide Figure 4-5 Click Advanced, advanced selections for WAN Service Setup can be shown. ¾ MTU (bytes): Maximum Transmission Unit Size. Check this box then you can change the MTU size. The default MTU value is 1500 Bytes. It is not recommended that you change the default value unless required by your ISP. ¾ Enable NAT: This technology translates the IP addresses of a local area network to a different IP address for the Internet. If this Modem Router is hosting your network's connection to the Internet, please select the check box. If another Router exists in your network, you don't need to select the option. ¾ Enable Fullcone NAT: It is a type of NAT, if not enabled, the default NAT will act. ¾ Enable SPI Firewall: A SPI firewall enhances network's security. Select the option to use a firewall, or else without a firewall. ¾ Enable IGMP Proxy: IGMP (Internet Group Management Protocol) is used to manage multicasting on TCP/IP networks. Some ISPs use IGMP to perform remote configuration for client devices, such as the Modem Router. The default value is disabled, and if you are not sure, please contact your ISP or just leave it. 23

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TD-W8968
300Mbps Wireless N USB ADSL2+ Modem Router User Guide
23
Figure 4-5
Click
Advanced
, advanced selections for WAN Service Setup can be shown.
¾
MTU (bytes):
Maximum Transmission Unit Size. Check this box then you can change the MTU
size. The default
MTU
value is 1500 Bytes. It is not recommended that you change the default
value unless required by your ISP.
¾
Enable NAT:
This technology translates the IP addresses of a local area network to a different
IP address for the Internet. If this Modem Router is hosting your network’s connection to the
Internet, please select the check box. If another Router exists in your network, you don’t need
to select the option.
¾
Enable Fullcone NAT
: It is a type of NAT, if not enabled, the default NAT will act.
¾
Enable SPI Firewall:
A SPI firewall enhances network’s security. Select the option to use a
firewall, or else without a firewall.
¾
Enable
IGMP Proxy
: IGMP (Internet Group Management Protocol) is used to manage
multicasting on TCP/IP networks. Some ISPs use IGMP to perform remote configuration for
client devices, such as the Modem Router. The default value is disabled, and if you are not
sure, please contact your ISP or just leave it.