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4 example 4: nat unfriendly application programs – ZyXEL Communications Intelligent Broadband Sharing Gateway P-324 User Manual

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NAT

Figure 11-21 Example 3: Menu 15.2

11.4.4 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 this mapping type. The
following figure illustrates this.

Menu 15.2 - 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:

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