Network Connections And Data Paths; Network Services; Network Services Associated With Specific Ports - Digi ConnectPort LTS Series User Manual

Network connections and data paths

ConnectPort LTS devices allow for several kinds of connections and paths for data flow between
ConnectPort LTS devices and other entities. You can group these connections into two main
categories:
Network services, in which a remote entity initiates a connection to a Digi device.
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Network/serial clients, in which a Digi device initiates a network connection or opens a serial
n
port for communication.
The following topics describe the effects of enabling features and selecting settings when configuring
ConnectPort LTS devices.

Network services

A network service connection occurs when a remote entity initiates a connection to a Digi device.
There are several categories of network services:

Network services associated with specific ports

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Network services associated with serial ports in general
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Network services associated with the command-line interface
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Network services associated with specific ports
The following list details network services associated with specific ports.
Reverse telnet: A remote entity establishes a telnet connection to a Digi serial port. Data
n
passes transparently between the telnet connection and a named serial port.
Reverse raw socket: A remote entity establishes a raw TCP socket connection to a Digi serial
n
port. Data passes transparently between the socket and a named serial port.
Reverse TLS socket: A remote entity establishes an encrypted raw TCP socket connection to a
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Digi serial port. Data passes transparently to and from a named serial port.
LPD: A remote entity establishes a TCP connection to a named serial port. The Digi device
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interprets the LPD protocol and sends a print job out of the serial port.
Modem emulation, also known as pseudo-modem (pmodem): A remote entity establishes a
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TCP connection to a named serial port. This connection is "interpreted" as an incoming call to
the pseudo-modem.
Console Mgmt: Allows a TCP connection to a serially-attached console.
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