Example 2: Internet Access With An Default Server; Example 3: Multiple Public Ip Addresses With Inside Servers; Figure 266 Nat Example 2; Figure 267 Menu 15.2: Specifying An Inside Server - ZyXEL Communications ZyWALL 5 User Manual

33.4.2 Example 2: Internet Access with an Default Server

Figure 266 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 267 Menu 15.2: Specifying an Inside Server

Rule
------------------------------------------------------
001
002
003
004
005
006
007
008
009
010
Select Command= None

33.4.3 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 bi-
directional and two uni-directional as follows.
Chapter 33 Network Address Translation (NAT)
Menu 15.2 - NAT Server Setup
Default Server: 192.168.1.10
Act. Start Port
Yes 21
No 0
No 0
No 0
No 0
No 0
No 0
No 0
No 0
No 0
Press ENTER to Confirm or ESC to Cancel:
End Port IP Address
25 192.168.1.33
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
Select Rule= N/A
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