Example 2: Internet Access With An Inside Server; Example 3: Multiple Public Ip Addresses With Inside Servers; Figure 123 Nat Example 2; Figure 124 Menu 15.2.1 Specifying An Inside Server - ZyXEL Communications P-202H V2 User Manual

P-202H Plus v2 User's Guide

23.5.2 Example 2: Internet Access with an Inside Server

The dynamic Inside Global Address is assigned by the ISP.

Figure 123 NAT Example 2

In this case, you do exactly as above (use the convenient pre-configured SUA Only set) and
also go to menu 15.2.1 to specify the Inside Server behind the NAT as shown in the next
figure.

Figure 124 Menu 15.2.1 Specifying an Inside Server

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23.5.3 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 bi-
directional and two unidirectional as follows.
223
Menu 15.2.1 - NAT Server Setup
Rule Start Port No.
1. Default
2. 0
3. 0
4. 0
5. 0
6. 0
7. 0
8. 0
9. 0
10. 0
11. 0
12. 0
Press ENTER to Confirm or ESC to Cancel:
End Port No. IP Address
Default 192.168.1.10
0 0.0.0.0
0 0.0.0.0
0 0.0.0.0
0 0.0.0.0
0 0.0.0.0
0 0.0.0.0
0 0.0.0.0
0 0.0.0.0
0 0.0.0.0
0 0.0.0.0
0 0.0.0.0
Chapter 23 Network Address Translation (NAT)