ZyXEL 202H 91-003-194003B User Manual
Product codes
91-003-194003B
P-202H Plus v2 User’s Guide
227
Chapter 23 Network Address Translation (NAT)
23.5.4 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.
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 130 NAT Example 4
Note: 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.
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 131 Example 4: Menu 15.1.1.1 Address Mapping Rule.
After you’ve configured your rule, you should be able to check the settings in menu 15.1.1 as
shown next.
shown next.
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
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:
Press ENTER to Confirm or ESC to Cancel: