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HTTP request from outside users will be transferred to 192.168.2.2.
Therefore, by just entering the IP Address provided by the ISP,
Internet users can access the service they need at the local address
to which you redirect them.
Some of the more common TCP service ports include:
HTTP: 80, FTP: 21, Telnet: 23 and POP3: 110.
Enabling Special Applications
Some applications require multiple connections, such as Internet
gaming, videoconferencing, Internet telephony and others. These
applications may not work when Network Address Translation
(NAT) is enabled. If you need to run applications that require
multiple connections, use the following screen to specify the
additional public ports to be opened for each application.