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Prestige 2802HW(L)-Ix Support Notes
All contents copyright (c) 2007 ZyXEL Communications Corporation.
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The most often used port numbers are shown in the following table. Please refer RFC 1700 for further
information about port numbers.
Service Port Number
FTP 20,21
Telnet 23
SMTP 25
DNS (Domain Name Server) 53
www-http (Web) 80
PPTP (Point-to-Point Tunneling
Protocol)
1723
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.