ZyXEL Communications Prestige 650H-E Series - Manual (Page 18)

Prestige 650H-E
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5.3 Configuring Address Mapping
Some applications do not support NAT mapping using TCP or UDP port address translation. In this
case it is better to use Many-To-Many No Overload mapping as port numbers do not change for
Many-To-Many No Overload (and One-to-One) NAT mapping types. The following figure
illustrates this.
Figure 16 NAT Example
Applications such as some gaming programs are NAT unfriendly because
they embed addressing information in the data stream. These applications
won’t work through NAT even when using One-to-One and Many-To-Many No
Overload mapping types.
Ordering your rules is important because the Prestige applies the rules in the order that you specify.
To change your Prestige’s address mapping settings, click Advanced Setup and NAT. Select Full
Feature and click Edit Details. Click on a rule to display the configuration screen as shown.