ZyXEL Communications Internet Security Gateway ZyWALL 2 Series - Manual (Page 132)

ZyWALL 2 Series User’s Guide
8-10 NAT
Table 8-5 Address Mapping
LABEL DESCRIPTION
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), the Single User Account feature.
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.
Edit Click Edit to go to the Address Mapping Rule screen.
Delete Click Delete to delete an address mapping rule.
Insert Click Insert to insert a new mapping rule before an existing one.
Configuring Address Mapping
To edit an Address Mapping rule, click the Edit button to display the screen shown next.
Figure 8-6 Address Mapping Rule
The following table describes the fields in this screen.