ZyXEL Communications P-660HW-D1 V2, Руководство пользователя

Страница: 135 / 358

Chapter 8 Network Address Translation (NAT) Screens
P-660HW-Dx v2 User’s Guide
135
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.
SNMP trap 162
PPTP (Point-to-Point Tunneling Protocol) 1723
Table 47 Services and Port Numbers
SERVICES PORT NUMBER