Edimax Technology AR-7286WNB user manual Field, Description

Field	Description
Application	You can enter an application name, or select a name from the
	right drop-list menu like FTP or TELNET.
Protocol	Choose the transport layer protocol that the service type. You
	can choose ALL, TCP or UDP.
	Enter the specific start and end port number you want to
Start/End	forward. If it is only one port, enter the end port number the
Port	same as start port number. For example, if you want to set the
Number	FTP Virtual server, you can set the start and end port number
	to 21.
Local IP	Enter the IP Address for the Virtual Server in the LAN.
Address

In the NAT page, select Number of IPs as Multiple, and then choose IP Address Mapping (for Multiple IP Service), and the page shown in the following figure appears. The IP Address Mapping rule is per-VC based (only for Multiple IPs' VCs).

Entries in this table allow you to configure one IP pool for specified source IP address from LAN, so that one packet whose source IP is in range of the specified address will select one IP address from the pool for NAT.

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