ZyXEL Communications Wireless Gateway Series 23.4.4 Example 4: NAT Unfriendly Application Programs

ZyAIR Wireless Gateway Series User’s Guide

23.4.4 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 One-to-Onemapping as port numbers do not change for Many One-to-One(and One-to-One)NAT mapping types. The following figure illustrates this.

Figure 23-17 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-Oneand Many One-to-Onemapping types.

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

Menu 15.1.1.1 Address Mapping Rule

Type= Many One-to-One

Local IP:

Start= 192.168.1.10

End = 192.168.1.12

Global IP:

Start= 10.132.50.1

End = 10.132.50.3

Press ENTER to Confirm or ESC to Cancel:

Figure 23-18 Menu 15.1.1.1 Address Mapping Rule

NAT 23-15