ZyXEL Communications 5 Series - Manual (Page 621)

ZyWALL 5/35/70 Series User’s Guide
Chapter 42 Network Address Translation (NAT) 621
Figure 364 Menu 15.2.1: 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 365 Server Behind NAT Example
42.4 General NAT Examples
The following are some examples of NAT configuration.
42.4.1 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.
Menu 15.2.1 - NAT Server Setup
Default Server: 0.0.0.0
Rule Act. Start Port End Port IP Address
------------------------------------------------------
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: