General Nat Examples; Internet Access Only; Figure 332 Menu 15.2: Nat Server Setup; Figure 333 Server Behind Nat Example - ZyXEL Communications ZYWALL 2 PLUS User Manual

Chapter 35 Network Address Translation (NAT)

Figure 332 Menu 15.2: NAT Server Setup

You assign the private network IP addresses. The NAT network appears as a single host on the
Internet. A is the FTP/Telnet/SMTP server.

Figure 333 Server Behind NAT Example

35.4 General NAT Examples

The following are some examples of NAT configuration.

35.4.1 Internet Access Only

In the following Internet access example, you only need one rule where all your ILAs (Inside
Local addresses) map to one dynamic IGA (Inside Global Address) assigned by your ISP.
508
Menu 15.2 - NAT Server Setup
Default Server: 0.0.0.0
Rule Act. Start Port
------------------------------------------------------
001 No 0
002 Yes 21
003 No 0
004 No 0
005 No 0
006 No 0
007 No 0
008 No 0
009 No 0
010 No 0
Select Command= None
Press ENTER to Confirm or ESC to Cancel:
End Port IP Address
0 0.0.0.0
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
Select Rule= N/A
ZyWALL 2 Plus User's Guide