ZyXEL P-870H-53A v2 User Guide - Page 130
Port Forwarding Example, Internet
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Chapter 8 Network Address Translation (NAT) Table 43 Services and Port Numbers SERVICES SNMP trap PPTP (Point-to-Point Tunneling Protocol) PORT NUMBER 162 1723 Port Forwarding 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. Figure 72 Multiple Servers Behind NAT Example A=192.168.1.33 192.168.1.1 B=192.168.1.34 Internet C=192.168.1.35 D=192.168.1.36 IP address assigned by ISP 130 P-870H/HW Series User's Guide
Chapter 8 Network Address Translation (NAT)
P-870H/HW Series User’s Guide
130
Port Forwarding 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.
Figure 72
Multiple Servers Behind NAT Example
SNMP trap
162
PPTP (Point-to-Point Tunneling Protocol)
1723
Table 43
Services and Port Numbers
SERVICES
PORT NUMBER
Internet
D=192.168.1.36
192.168.1.1
IP address assigned by ISP
A=192.168.1.33
B=192.168.1.34
C=192.168.1.35