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WR3000 4-Port Wireless DSL/Cable Router
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77
9.2.1 Port Forwarding: Services and Port Numbers - Continued
Services and Port Numbers
SERVICES
SERVICES
PORT NUMBER
PORT NUMBER
ECHO
ECHO
7
FTP (File Transfer Protocol)
FTP (File Transfer Protocol)
21
SMTP (Simple Mail Transfer Protocol)
SMTP (Simple Mail Transfer Protocol)
25
DNS (Domain Name System)
DNS (Domain Name System)
53
Finger
79
HTTP (Hyper Text Transfer protocol or WWW, Web)
HTTP (Hyper Text Transfer protocol or WWW, Web)
80
P0P3 (Post Offi ce Protocol)
P0P3 (Post Offi ce Protocol)
110
NNTP (Network News Transport Protocol)
NNTP (Network News Transport Protocol)
119
SNMP (Simple Network Management Protocol)
SNMP (Simple Network Management Protocol)
161
SNMP trap
SNMP trap
162
PPTP (Point-to-Point Tunneling Protocol)
PPTP (Point-to-Point Tunneling Protocol)
1723
9.2.2 Confi guring Servers Behind SUA (Example)
Let’s say you want to assign ports 22-25 to one server, port 80 to another and assign a default
server IP address of 192.168.1.35 as shown in the fi gure below.
The NAT network appears as a single host on the Internet