ZyXEL Communications ZyAIR G-2000 Plus, User Manual

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ZyAIR G-2000 Plus User’s Guide
301 Chapter 28 Network Address Translation (NAT)
28.4 Configuring a Server behind NAT
Follow these steps to configure a server behind NAT:
1
Enter 15 in the main menu to go to Menu 15 - NAT Setup.
2 Enter 2 to display Menu 15.2 - NAT Server Setup as shown next.
Figure 153 Menu 15.2.1 NAT Server Setup
3
Enter a port number in an unused Start Port No field. To forward only one port, enter it
again in the End Port No field. To specify a range of ports, enter the last port to be
forwarded in the End Port No field.
4 Enter the inside IP address of the server in the IP Address field. In the following figure,
you have a computer acting as an FTP, Telnet and SMTP server (ports 21, 23 and 25) at
192.168.1.33.
5
Press
[ENTER]
at the “Press ENTER to confirm …” prompt to save your configuration
after you define all the servers or press [ESC] at any time to cancel.
You assign the private network IP addresses. The NAT network appears as a single host on the
Internet. A is the FTP/Telnet/SMTP server.
End This is the ending inside global IP address (IGA). This field is N/A for One-to-One ,
Many-to-One and Server types .
When you have completed this menu, press [ENTER] at the prompt “Press ENTER to confirm or ESC
to cancel” to save your configuration or press [ESC] to cancel and go back to the previous screen.
Table 104 Menu 15.1.1.1 Editing/Configuring an Individual Rule in a Set
FIELD DESCRIPTION
Menu 15.2 - NAT Server Setup
Rule Start Port No. End Port No. IP Address
---------------------------------------------------
1. Default Default 0.0.0.0
2. 21 25 192.168.1.33
3. 0 0 0.0.0.0
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: