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DMZ
Enable or disable the DMZ function. DMZ (Demilitarized Zone) specifically
allows one computer/device behind NAT to become “demilitarized”, so all
packets from the external network are forwarded to this computer/device.
The demilitarized host is exposed to the wide area network, which can
realize the unlimited bidirectional communication between internal hosts
and external hosts.
DMZ IP
Specify the IP address of the local host network device. The DMZ host
device will be completely exposed to the external network. Any PC that was
used for a DMZ must have a static or reserved IP Address because its IP
Address may change when using the DHCP function.
ALG
Select the type of ALG to enable the corresponding feature. Common
NAT only translates the address of packets at network layer and the port
number at transport layer but cannot deal with the packets with embedded
source/destination information in the application layer. Application layer
gateway (ALG) can deal with protocols with embedded source/destination
information in the application payload. Some protocols such as FTP, TFTP,
H323 and RTSP require ALG (Application Layer Gateway) support to pass
through NAT.
FTP ALG: Allows FTP clients and servers to transfer data across NAT.
TFTP ALG: Allows TFTP clients and servers to transfer data across NAT.
H323 ALG: Allows Microsoft NetMeeting clients to communicate across
NAT.
RTSP ALG: Allows some media player clients to communicate with some
streaming media servers across NAT.
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