Example 4: Nat Unfriendly Application Programs; Figure 23-17 Nat Example 4; Figure 23-18 Menu 15.1.1.1 Address Mapping Rule - ZyXEL Communications ZyAIR Wireless Gateway Series User Manual

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-One mapping as port numbers do not change for Many One-to-One (and
One-to-One) NAT mapping types. The following figure illustrates this.
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 One-to-One mapping
Follow the steps outlined in example 3 to configure these two menus as follows.
Type= Many One-to-One
Local IP:
Start= 192.168.1.10
End
Global IP:
Start= 10.132.50.1
End
NAT

Figure 23-17 NAT Example 4

Menu 15.1.1.1 Address Mapping Rule
= 192.168.1.12
= 10.132.50.3
Press ENTER to Confirm or ESC to Cancel:

Figure 23-18 Menu 15.1.1.1 Address Mapping Rule

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types.
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