D-Link DVG-2032S User Manual download pdf (Page 25)

NAT/DDNS

NAT Traversal

If a Gateway is set up under an IP sharing setting, you can select either the NAT or STUN

protocol.

 NAT Public IP: The IP address used by the gateway should be a virtual address. Further

more, users must set the Virtual Server Mapping in the NAT Server (A virtual server is

defined as a Service Port, and all requests to this port will be redirected to this specified the

server IP address).

The default port is listed below:

Listen Port (UDP): 5060

RTP Starting Port (UDP): 9000~9031 (Listen Port used for telephone communication).

Http Port (TCP): 80

 NAT IP/Domain: Enter the NAT Server IP address (Real External IP address of NAT Server)

then fill in the URL (Uniform Resource Locator). If using DDNS, please refer to the next

setting item

 Enable STUN Client: Using STUN protocol prevents problems with setting the IP sharing

function, but some NAT do not support this protocol.

 STUN Server IP/Domain and Port: Enter the STUN server IP address and Listen Port

number. You can set 2 STUN server spread by semicolon.

 Enable UPnP Control Point: To enable the gateway’s IP traffic to pass through a NAT

server. This function only works when the NAT server supports UPnP and has it enabled.

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D-Link DVG-2032S User Manual Page 25