ZyXEL Communications 1600 User Manual
Prestige 1600 Universal Access Concentrator
9-10
NAT
Press [ENTER] at the “Press ENTER to confirm …” prompt to save your configuration after you define all the
servers or press ESC at any time to cancel. The most often used port numbers are shown in the following table.
Please refer to RFC 1700 for further information about port numbers. Please also refer to the included disk for more
examples and details on NAT.
servers or press ESC at any time to cancel. The most often used port numbers are shown in the following table.
Please refer to RFC 1700 for further information about port numbers. Please also refer to the included disk for more
examples and details on NAT.
Figure 9-10 Menu 15.2 - NAT Server Setup
Table 9-6 Common Services & Port numbers
Services
Port Number
FTP (File Transfer Protocol)
21
Telnet
23
SMTP (Simple Mail Transfer Protocol)
25
DNS(Domain Name System)
53
HTTP (Hyper Text Transfer protocol or WWW, Web)
80
PPTP (Point-to-Point Tunneling Protocol)
1723
9.4 Examples
9.4.1 Internet Access Only
In this Internet access example, you only need one rule where all the ILAs (Inside Local Addresses) map to one
dynamic IGA (Inside Global Address) assigned by your ISP.
dynamic IGA (Inside Global Address) assigned by your ISP.
Menu 15.2 - NAT Server Sets
Port #
----
IP Address
---------------
1. (Used by SUA)
0.0.0.0
2.21
192.168.255.1
3.23
192.168. 255.2
4.25
192.168. 255.3
5.80
192.168. 255.4
6. 0
0.0.0.0
7. 0
0.0.0.0
8. 0
0.0.0.0
9. 0
0.0.0.0
10. 0
0.0.0.0
Press ENTER to Confirm or ESC to Cancel: