Chapter 9 NAT
USG FLEX H Series User’s Guide
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Figure 110 Network > NAT > Add
The following table describes the labels in this screen.
Table 80 Network > NAT > Add
LABEL DESCRIPTION
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 Zyxel Device
available to a public network outside the Zyxel Device (like the Internet).
1:1 NAT - If the private network server will initiate sessions to the outside clients, select this to
have the Zyxel Device 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 Zyxel Device
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.
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