Prestige 662H/HW Series User’s Guide

Figure 200 Example 3: Menu 15.2.1

Menu 15.2.1 - NAT Server Setup

Rule Start Port No. End Port No. IP Address

---------------------------------------------------

1.

Default

Default

0.0.0.0

2.

80

80

192.168.1.21

3.

25

25

192.168.1.20

4.

0

0

0.0.0.0

5.

0

0

0.0.0.0

6.

0

0

0.0.0.0

7.

0

0

0.0.0.0

8.

0

0

0.0.0.0

9.

0

0

0.0.0.0

10.

0

0

0.0.0.0

11.

0

0

0.0.0.0

12.

0

0

0.0.0.0

Press ENTER to Confirm or ESC to Cancel:

34.5.4 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 201 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-to-Many No Overload mapping types.

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

Chapter 34 Network Address Translation (NAT)

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