Atlantis Land 111U - Manual (Page 54)

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example both FTP and web service), it might be better to specify a range of port
numbers. You can allocate a server IP address that corresponds to a port or a range of
ports.
Many residential broadband ISP accounts do not allow you to run any server processes
(such as a Web or FTP server) from your location. Your ISP may periodically check for
servers and may suspend your account if it discovers any active services at your
location. If you are unsure, refer to your ISP.
Default Server IP Address
In addition to the servers for specified services, NAT supports a default server IP
address. A default server receives packets from ports that are not specified in this
screen.
8.3.1 Port Forwarding: Services and Port Numbers
A NAT server set is a list of inside (behind NAT on the LAN) servers, for example, web
or FTP, that you can make accessible to the outside world even though NAT makes
your whole inside network appear as a single machine to the outside world.
Use the SUA Server page to forward incoming service requests to the server(s) on
your local network. You may enter a single port number or a range of port numbers to
be forwarded, and the local IP address of the desired server. The port number
identifies a service; for example, web service is on port 80 and FTP on port 21. In
some cases, such as for unknown services or where one server can support more than
one service (for example both FTP and web service), it might be better to specify a
range of port numbers.
In addition to the servers for specified services, NAT supports a default server. A
service request that does not have a server explicitly designated for it is forwarded to
the default server. If the default is not defined, the service request is simply discarded.
The most often used port numbers are shown in the following table. Please refer to
RFC 1700 for further information about port numbers.
Application Outcoming Connections Incoming Connections
ICQ 98, 99a Nessuno Nessuno
NetMeeting 2.1 a 3.01 Nessuno 1503 TCP, 1720 TCP
VDO Live Nessuno Nessuno
mIRC Nessuno Nessuno
Cu-SeeMe 7648 TCP &UDP, 24032 UDP 7648 TCP &UDP, 24032