ZyAIR G-2000 Plus User’s Guide

Figure 157 NAT Example 2

In this case, you do exactly as above (use the convenient pre-configured SUA Only set) and also go to menu 15.2 to specify the Inside Server behind the NAT as shown in the next figure.

Figure 158 Menu 15.2.1 Specifying an Inside Server

Menu 15.2.1

- NAT

Server Setup

 

Rule Start Port

No.

End Port No.

IP Address

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

1.

Default

Default

192.168.1.10

2.

0

0

0.0.0.0

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:

28.5.3 Example 3: Multiple Public IP Addresses With Inside Servers

In this example, there are 3 IGAs from our ISP. There are many departments but two have their own FTP server. All departments share the same router. The example will reserve one IGA for each department with an FTP server and all departments use the other IGA. Map the FTP servers to the first two IGAs and the other LAN traffic to the remaining IGA. Map the third IGA to an inside web server and mail server. Four rules need to be configured, two bidirectional and two unidirectional as follows.

1Map the first IGA to the first inside FTP server for FTP traffic in both directions (1 : 1 mapping, giving both local and global IP addresses).

2Map the second IGA to our second inside FTP server for FTP traffic in both directions (1 : 1 mapping, giving both local and global IP addresses).

3Map the other outgoing LAN traffic to IGA3 (Many : 1 mapping).

Chapter 28 Network Address Translation (NAT)

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