Sierra Wireless RJ-11 - Manual (Page 33)

Hardware
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• Outgoing Network Connection : Enables an outgoing
connection to the specified host.
• Outgoing Telnet Connection : Enables an outgoing telnet
connection to the specified host.
• Modem Service Options : When Modem Service is
selected, you may also configure the Source TCP Port. In
most cases, the value used for the source port is arbitrary
and you can leave this field set to 0 for “any”. However, if
your server or firewall has specific requirements you may
specify an explicit source port number in the Source TCP
Port field. If this port is not available when the TCP service
starts up, an error will occur and the TCP service will reset
and try again.
Network Translation
The RJ‐11 IP Gateway is capable of accepting incoming TCP
connections and redirecting them to remote TCP hosts. This
functionality is called network translation and behaves much
like a TCP “pipe” between two systems. The Host RJ‐11 IP
Gateway also uses Network Translation to allow connections
to the web‐base interface on a port other than the http protocol
defined port of 80 which is frequently blocked by cellular
carriers.
Figure 2-6: RJ-11 IP Gateway: Network Tnaslation
It is also possible to modify the network protocol traveling
through the TCP pipe by using the Protocol Settings page to
define the remote hostʹs protocol requirements. The most