ZyXEL Communications ADSL2+ Ethernet Gateway P-660R-T Series Manuale Utente Pagina 31

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P-660R-F1 Support Notes
31
All contents copyright © 2011 ZyXEL Communications Corporation.
Server IP AddressAdd
Step 3: You could click the button 
Server IP Address, Start/End Port.
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
21
Telnet
23
SMTP
25
DNS (Domain Name Server)
53
www-http (Web)
80
PPTP (Point-to-Point Tunneling
Protocol)
1723
Examples
Using Multiple Global IP addresses for clients and servers
Support Non NAT Friendly Applications
(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.
P-660R-F1
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