Chapter 36 Network Address Translation (NAT)

36.4.2 Example 2: Internet Access with a Default Server

Figure 354 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 Default Server behind the NAT as shown in the next figure.

Figure 355 Menu 15.2: Specifying an Inside Server

Menu 15.2 - NAT Server Setup

 

Default Server: 192.168.1.10

IP Address

Rule Act. Start Port End Port

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

001

No

0

0

0.0.0.0

002

Yes

21

25

192.168.1.33

003

No

0

0

0.0.0.0

004

No

0

0

0.0.0.0

005

No

0

0

0.0.0.0

006

No

0

0

0.0.0.0

007

No

0

0

0.0.0.0

008

No

0

0

0.0.0.0

009

No

0

0

0.0.0.0

010

No

0

0

0.0.0.0

Select

Command= None

 

Select Rule= N/A

 

Press ENTER to Confirm or ESC to Cancel:

36.4.3 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 uni-directional 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).

532

 

ZyWALL 2 Plus User’s Guide