ZyXEL Communications P-660HN-T1H manual 141

Chapter 9 Network Address Translation (NAT)

The following table describes the fields in this screen.

Table 44 Network > NAT > Address Mapping

LABEL	DESCRIPTION
#	This is the rule index number.
Local Start IP	This is the starting Inside Local IP Address (ILA). Local IP addresses are
	N/A for Server port mapping.
Local End IP	This is the end Inside Local IP Address (ILA). If the rule is for all local IP
	addresses, then this field displays 0.0.0.0 as the Local Start IP address
	and 255.255.255.255 as the Local End IP address. This field is N/A for
	One-to-one and Server mapping types.
Global Start	This is the starting Inside Global IP Address (IGA). Enter 0.0.0.0 here if
IP	you have a dynamic IP address from your ISP. You can only do this for
	Many-to-One and Server mapping types.
Global End IP	This is the ending Inside Global IP Address (IGA). This field is N/A for
	One-to-one,Many-to-One and Server mapping types.
Type	1-1: One-to-one mode maps one local IP address to one global IP
	address. Note that port numbers do not change for the One-to-one NAT
	mapping type.
	M-1: 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),
	ZyXEL's Single User Account feature that previous ZyXEL routers
	supported only.
	M-M Ov (Overload): Many-to-Many Overload mode maps multiple local
	IP addresses to shared global IP addresses.
	MM No (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.
Modify	Click the edit icon to go to the screen where you can edit the address
	mapping rule.
	Click the delete icon to delete an existing address mapping rule. Note that
	subsequent address mapping rules move up by one when you take this
	action.

	141
P-660HN-T1H User’s Guide