Supported Connections And Data Paths; Network Services - Digi LTS 32 User Manual

Supported connections and data paths

ConnectPort LTS products allow for several kinds of connections and paths for data flow between
the ConnectPort LTS product and other entities. These connections can be grouped into two main
categories:

Network services, in which a remote entity initiates a connection to a ConnectPort LTS product.

Network/serial clients, in which a ConnectPort LTS product initiates a network connection or
opens a serial port for communication.
This discussion of connections and data paths may be helpful in understanding the effects of
enabling certain features and choosing certain settings when configuring Digi products.

Network services

A network service connection is one in which a remote entity initiates a connection to a
ConnectPort LTS product. There are several categories of network services:

Network services associated with specific serial ports

Network services associated with serial ports in general

Network services associated with the command-line interface (CLI)
Network services associated with specific serial ports

Reverse Telnet: A telnet connection is made to a ConnectPort LTS product, in which data is
passed transparently between the telnet connection and a named serial port.

Reverse raw socket: A raw TCP socket connection is made to a ConnectPort LTS product, in
which data is passed transparently between the socket and a named serial port.

Reverse TLS socket: An encrypted raw TCP socket is made to a ConnectPort LTS product, in
which data is passed transparently to and from a named serial port.

LPD: A TCP connection is made to a named serial port, in which the ConnectPort LTS product
interprets the LPD protocol and sends a print job out of the serial port.

Modem emulation, also known as Pseudo-modem (pmodem): A TCP connection is made to a
named serial port, and the connection will be ―interpreted‖ as an incoming call to the pseudo-
modem.

Console Mgmt: Allows a TCP connection.

Modem: The Modem Profile allows for attaching modem devices to the serial port to establish
or receive connections from other systems and modems.
26