ZyXEL P-861H-G2 User Guide - Page 187
Example 4: NAT Unfriendly Application Programs
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Prestige 861H Series User's Guide 20.5.4 Example 4: NAT Unfriendly Application Programs 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 117 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 118 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. Chapter 20 Network Address Translation (NAT) 186