ZyXEL Communications ZyWALL 2 Plus - Manual (Page 339)

Chapter 17 Network Address Translation (NAT)
ZyWALL 2 Plus User’s Guide
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17.4.2 NAT Address Mapping Edit
Click the edit icon to display the NAT Address Mapping Edit screen. Use this screen to edit
an address mapping rule. See
Section 17.1 on page 331 for information on NAT and address
mapping.
Figure 220 ADVANCED > NAT > Address Mapping > Edit
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.
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. A window display
asking you to confirm that you want to delete the address mapping rule. Note that
subsequent address mapping rules move up by one when you take this action.
Insert Click Insert to insert a new mapping rule before an existing one.
Table 96 ADVANCED > NAT > Address Mapping (continued)
LABEL DESCRIPTION