ZyXEL Communications Prestige 2602RL-D3A Support Notes page 28

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12.
The most often used port numbers are shown in the following table. Please refer RFC 1700 for further
information about port numbers.
1. Internet Access Only
In our Internet Access example, we only need one rule where all our ILAs map to one IGA assigned by the ISP.
See the following figure.
21
80
0
0
0
0
0
0
0
0
0
Press ENTER to Confirm or ESC to Cancel:
Service
FTP
Telnet
SMTP
DNS (Domain Name Server)
www-http (Web)
PPTP (Point-to-Point
Protocol)
All contents copyright (c) 2007 ZyXEL Communications Corporation.
Prestige 2602RL-D3A Support Notes
21 192.168.1.33
80 192.168.1.36
0 0.0.0.0
0 0.0.0.0
0 0.0.0.0
0 0.0.0.0
0 0.0.0.0
0 0.0.0.0
0 0.0.0.0
0 0.0.0.0
0 0.0.0.0
Port Number
21
23
25
53
80
Tunneling 1723
28