Configuring Servers Behind Sua (Example); Configuring Sua Server; Figure 41 Multiple Servers Behind Nat Example; Table 40 Services And Port Numbers - ZyXEL Communications ZyAir G-2000 PlusV2 User Manual

Table 40 Services and Port Numbers

SERVICES
ECHO
FTP (File Transfer Protocol)
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)

8.3.3 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 41 Multiple Servers Behind NAT Example

8.4 Configuring SUA Server

Note: If you do not assign a Default Server IP Address, the ZyXEL device 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 40
Chapter 8 Single User Account (SUA) / Network Address Translation (NAT)
for port numbers commonly used for particular services.
ZyXEL G-2000 Plus v2 User's Guide
PORT NUMBER
7
21
25
53
79
80
110
119
161
162
1723
119