Configuring Servers Behind Sua (Example); Selecting The Nat Mode; Figure 46 Multiple Servers Behind Nat Example - ZyXEL Communications Prestige 660H Series User Manual

Prestige 660H/HW Series User's Guide
Table 30 Services and Port Numbers (continued)
SERVICES
SMTP (Simple Mail Transfer Protocol)
DNS (Domain Name System)
Finger
HTTP (Hyper Text Transfer protocol or WWW, Web)
POP3 (Post Office Protocol)
NNTP (Network News Transport Protocol)
SNMP (Simple Network Management Protocol)
SNMP trap
PPTP (Point-to-Point Tunneling Protocol)

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.
119
PORT NUMBER
25
53
79
80
110
119
161
162
1723
Chapter 9 Network Address Translation (NAT) Screens