User's Manual

Oplink Communications
Step 3: input the external service port given by the Router,
for example, 80.
Step 4: input the internal Web service port, for example,
80.
Step 5: Input the internal server’s IP address. If your Web
server’s IP address is 192.168.2.10, please input it.
Step 6: select the communication protocol used by your
internal host: TCP, UDP, and ICMP.
Step 7: click “Apply” to activate the settings.
The following table has listed the well-known application
and service port:
Server Protocol Service Port
WEB Server TCP 80
FTP Server TCP 21
Telnet TCP 23
NetMeeting TCP
1503、1720
MSN
Messenger
TCP/UDP
File
Send:6891-6900(TCP)
Voice:1863、6901(TCP)
Voice:1863、5190(UDP)