ZyXEL Communications Prestige 652, User Manual, Page: 124 / 521

Prestige 652 Series User’s Guide
8-12 NAT
The following table describes the fields in this screen.
Table 8-6 Address Mapping Rules
LABEL DESCRIPTION
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 your rule is for all local IP addresses,
then enter 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 IP 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.
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.
Back Click Back to return to the NAT Mode screen.
8.7 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.