Example 4: nat unfriendly application programs, 4 example 4: nat unfriendly application programs – ZyXEL Communications Prestige 314 PLUS User Manual

Page 86

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Prestige 314 PLUS Broadband Sharing Gateway with 4-Port Switch

4-24

NAT

Step 8. Now enter 2 from this menu and configure it as shown in Figure 4-21.

Figure 4-21 Example 3: Menu 15.2

4.4.4 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. 1026 1026 RR Reserved

Press ENTER to Confirm or ESC to Cancel:

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