Table 9-6 Address Mapping - ZyXEL Communications ZyWall 10W User Manual

The following table describes the labels in this screen.
LABEL
Local Start IP This refers to the Inside Local Address (ILA), which is the starting local IP address. If the
rule is for all local IP addresses, then this field displays 0.0.0.0 as the Local Start IP
address. Local IP addresses are N/A for Server port mapping.
Local End IP This is the end Inside Local Address (ILA). If the rule is for all local IP addresses, then
this field displays 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 refers to the Inside Global IP Address (IGA). 0.0.0.0 is for a dynamic IP address
from your ISP with Many-to-One and Server mapping types.
Global End IP This is the ending Inside Global Address (IGA), which is the starting global IP address.
This field is N/A for One-to-One, Many-to-One and Server mapping types.
Type 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.
2. 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.
3. Many-to-Many Overload mode maps multiple local IP addresses to shared global IP
addresses.
4. Many One-to-One mode maps each local IP address to unique global IP addresses.
5. Server allows you to specify inside servers of different services behind the NAT to be
accessible to the outside world.
Select the radio button next to a rule and click Edit to go to the Address Mapping Edit
Edit
screen for that rule.
Delete Select the radio button next to a rule and click Delete to delete the address mapping
rule.
Insert Click Insert to insert a new mapping rule before an existing one.
9.5.1 Address Mapping Edit
To edit an Address Mapping rule, click the Edit button to display the screen shown next.
NAT Screens

Table 9-6 Address Mapping

DESCRIPTION
ZyWALL Series Internet Security Gateway
9-11