Nat/Dmz - Caimore CM520-6X Series User Manual

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means this rule has not been added successfully even if there is a successful tip. If that
happens, please check your settings.

4.2.2 NAT/DMZ

4.2.2.1 NAT
The full name of NAT is "Network Address Translation", also means port mapping. It's a
technology that map private IP addresses to a WAN address's different ports, which makes
devices in LAN can be accessed by Internet.
By setting these parameters, it'll transfer the data from Internet to a specified host and
port in the LAN via port mapping.
 Name: It's used to identify different rules, so each name should be different. Please name
it with 0-9,a-z,A-Z, other characters will not be supported.
 Protocol: There are three protocols can be chosen -- TCP, UDP and TCP/UDP.
 External Port: WAN port.
 Internal IP Address: The private IP address you want to map to external.
 Internal Port: The port of internal host you want to map to external.
4.2.2.2 DMZ
In order to achieve the both-way communication, DMZ will expose a specified internal
host to Internet, that also means the host will play a role of virtual server. When there are
external users who wanting to visit the public IP address that mapped by the virtual server,
then router will transfer the data to virtual server directly.
If there is a host in LAN who wants to connect Internet directly, DMZ is a simple method
to achieve this purpose.
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