ZyXEL P-660HW-D1 v2 User Guide - Page 135
Configuring Port Forwarding
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Chapter 8 Network Address Translation (NAT) Screens Table 47 Services and Port Numbers SERVICES SNMP trap PPTP (Point-to-Point Tunneling Protocol) PORT NUMBER 162 1723 8.5.3 Configuring Servers Behind 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 80 Multiple Servers Behind NAT Example 8.6 Configuring Port Forwarding " The Port Forwarding screen is available only when you select SUA Only in the NAT > General screen. " If you do not assign a Default Server IP address, the ZyXEL Device discards all packets received for ports that are not specified here or in the remote management setup. Click Network > NAT > Port Forwarding to open the following screen. See Table 47 on page 134 for port numbers commonly used for particular services. P-660HW-Dx v2 User's Guide 135