ZyXEL Communications P-660N-T1A User Manual page 139

The following table describes the fields in this screen.
Table 42 Network > NAT > Address Mapping
LABEL
#
Local Start IP
Local End IP
Global Start
IP
Global End IP
Type
Modify
P-660N-T1A User's Guide
DESCRIPTION
This is the rule index number.
This is the starting Inside Local IP Address (ILA). Local IP addresses are
N/A for Server port mapping.
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.
This is the starting Inside Global IP Address (IGA). Enter 0.0.0.0 here if
you have a dynamic IP address from your ISP. You can only do this for
Many-to-One and Server mapping types.
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.
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.
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.
Chapter 9 Network Address Translation (NAT)
139