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Chapter 35 Network Address Translation (NAT)
ZyWALL 2 Plus User’s Guide
511
2 Map 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).
3 Map the other outgoing LAN traffic to IGA3 (Many : 1 mapping).
4 You also map your third IGA to the web server and mail server on the LAN. Type
Server allows you to specify multiple servers, of different types, to other computers
behind NAT on the LAN.
The example situation looks somewhat like this:
Figure 338 NAT Example 3
1 In this case you need to configure Address Mapping Set 1 from Menu 15.1 - Address
Mapping Sets. Therefore you must choose the Full Feature option from the Network
Address Translation field (in menu 4 or menu 11.3) in Figure 339 on page 511.
2 Then enter 15 from the main menu.
3 Enter 1 to configure the Address Mapping Sets.
4 Enter 1 to begin configuring this new set. Enter a Set Name, choose the Edit Action
and then enter 1 for the Select Rule field. Press [ENTER] to confirm.
5 Select Type as One-to-One (direct mapping for packets going both ways), and enter
the local Start IP as 192.168.1.10 (the IP address of FTP Server 1), the global Start IP
as 10.132.50.1 (our first IGA). (See Figure 340 on page 512).
6 Repeat the previous step for rules 2 to 4 as outlined above.
7 When finished, menu 15.1.1 should look like as shown in Figure 341 on page 512.
Figure 339 Example 3: Menu 11.1.2
Menu 11.1.2 - Remote Node Network Layer Options
IP Address Assignment= Dynamic
IP Address= N/A
IP Subnet Mask= N/A
Gateway IP Addr= N/A
Network Address Translation= SUA Only
Metric= 2
Private=
RIP Direction= None
Version= N/A
Multicast= None
Enter here to CONFIRM or ESC to CANCEL: