ZyXEL ADSL Prestige 660HW-61 130122.0660HW61 Manual Do Utilizador

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130122.0660HW61
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Prestige 660H/HW Series User’s Guide
119 
Chapter 9 Network Address Translation (NAT) Screens
9.3.3  Configuring Servers Behind SUA (Example)
Let's say you want to assign ports 21-25 to one FTP, Telnet and SMTP server (A in the 
example), port 80 to another (B in the example) and assign a default server IP address of 
192.168.1.35 to a third (C in the example). You assign the LAN IP addresses and the ISP 
assigns the WAN IP address. The NAT network appears as a single host on the Internet.
IP address assigned by ISP.
Figure 46   Multiple Servers Behind NAT Example
9.4  Selecting the NAT Mode
You must create a firewall rule in addition to setting up SUA/NAT, to allow traffic from the 
WAN to be forwarded through the Prestige.
Click NAT to open the following screen.  
SMTP (Simple Mail Transfer Protocol)
25
DNS (Domain Name System)
53
Finger
79
HTTP (Hyper Text Transfer protocol or WWW, Web)
80
POP3 (Post Office Protocol)
110
NNTP (Network News Transport Protocol)
119
SNMP (Simple Network Management Protocol)
161
SNMP trap
162
PPTP (Point-to-Point Tunneling Protocol)
1723
Table 30   Services and Port Numbers (continued)
SERVICES
PORT NUMBER