ZyXEL Prestige 660HW-61 External 91-004-370001 Manual Do Utilizador

Prestige 660H/HW Series User’s Guide

279 

Chapter 29 Network Address Translation (NAT)

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 169   NAT Example 4

Other 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.

Follow the steps outlined in example 3 to configure these two menus as follows.

Figure 170   Example 4: Menu 15.1.1.1 Address Mapping Rule

Menu 15.1.1.1 Address Mapping Rule
     Type= Many-to-Many No Overload
     Local IP:
       Start= 192.168.1.10
       End  = 192.168.1.12
     Global IP:
       Start= 10.132.50.1
       End  = 10.132.50.3
     Server Mapping Set= N/A

Press ENTER to Confirm or ESC to Cancel:

After you’ve configured your rule, you should be able to check the settings in menu 15.1.1 as 
shown next.