Billion Electric Company 5100S user manual Editing an Address Mapping Rule

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This is equivalent to SUA (i.e., PAT, port address translation), Billion's Single User Account feature that previous Billion routers supported only.

M-M Ov (Overload): Many-to-Many Overload mode maps multiple local IP addresses to shared global IP addresses.

MMNo (No Overload): Many-to-Many No Overload mode maps each local IP address to unique global IP addresses.

Server: This type allows you to specify inside servers of different services behind the NAT to be accessible to the outside world.

Click Back to return to the NAT Mode screen.

6.7 Editing an Address Mapping Rule

To edit an address mapping rule, click the rule’s link in the NAT Address Mapping Rules screen to display the screen shown next.

The following table describes the labels in this screen.

	LABEL		DESCRIPTION
Type		Choose the port mapping type from one of the following.
		1.	One-to-One: One-to-One mode maps one local IP address to one global IP
		address. Note that port numbers do not change for One-to-one NAT mapping type.
		2.	Many-to-One: Many-to-One mode maps multiple local IP addresses to one
		global IP address. This is equivalent to SUA (i.e., PAT, port address translation),
		Billion's Single User Account feature that previous Billion routers supported only.
		3.	Many-to-Many Overload: Many-to-Many Overload mode maps multiple local IP
		addresses to shared global IP addresses.
		4.	Many-to-Many No Overload: Many-to-Many No Overload mode maps each

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