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Chapter 13 NAT
ZyWALL 110/310/1100 Series User’s Guide
223
13.2.1 The NAT Add/Edit Screen
The NAT Add/Edit screen lets you create new NAT rules and edit existing ones. To open this
window, open the NAT summary screen. (See Section 13.2 on page 222.) Then, click on an Add
icon or Edit icon to open the following screen.
Figure 128 Configuration > Network > NAT > Add
The following table describes the labels in this screen.
Table 84 Configuration > Network > NAT > Add
LABEL DESCRIPTION
Create new Object Use to configure any new settings objects that you need to use in this screen.
Enable Rule Use this option to turn the NAT rule on or off.
Rule Name Type in the name of the NAT rule. The name is used to refer to the NAT rule. You may
use 1-31 alphanumeric characters, underscores(
_), or dashes (-), but the first
character cannot be a number. This value is case-sensitive.
Classification Select what kind of NAT this rule is to perform.
Virtual Server - This makes computers on a private network behind the ZyWALL
available to a public network outside the ZyWALL (like the Internet).
1:1 NAT - If the private network server will initiate sessions to the outside clients,
select this to have the ZyWALL translate the source IP address of the server’s outgoing
traffic to the same public IP address that the outside clients use to access the server.
Many 1:1 NAT - If you have a range of private network servers that will initiate
sessions to the outside clients and a range of public IP addresses, select this to have
the ZyWALL translate the source IP address of each server’s outgoing traffic to the
same one of the public IP addresses that the outside clients use to access the server.
The private and public ranges must have the same number of IP addresses.
One many 1:1 NAT rule works like multiple 1:1 NAT rules, but it eases configuration
effort since you only create one rule.