P-2302R Series User’s Guide

Table 34 Services and Port Numbers

SERVICES

PORT NUMBER

 

 

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

 

 

12.3.3 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

Figure 48 Multiple Servers Behind NAT Example

12.4 Configuring SUA Server

Note: If you do not assign a default server IP address, the Prestige discards all packets received for ports that are not specified in this screen or remote management.

Click SUA/NAT to open the SUA Server screen.

Refer to Table 34 on page 132 for port numbers commonly used for particular services.

133

Chapter 12 Network Address Translation (NAT) Screens