User's Guide

Table Of Contents
5G INDUSTRIAL GATEWAY S2000e USER GUIDE 82
Port ForwardingA process that allows remote devices to connect to a specific computer
within a private LAN.
Port NumberA 16-bit number used by the TCP and UDP protocols to direct traffic on a
TCP/IP host. Certain port numbers are standard for common applications.
ProtocolA standard that enables connection, communication, and data transfer between
computing endpoints.
Proxy A firewall mechanism that replaces the IP address of a host on the internal (protected)
network with its own IP address for all traffic passing through it.
Router A device that directs traffic from one network to another.
RSSIReceived Signal Strength Indicator. An estimated measure of how well a device can
hear a signal from an access point or router. RSSI value is pulled from the device’s Wi-Fi card
(hence “received” signal strength), so it is not the same as transmit power from an access point
or router.
SIMSubscriber Identification Module. Found in LTE and GSM network technology, the SIM is
a card containing identification information for the subscriber and their account. The SIM card
can be moved to different devices.
SMTPSimple Mail Transfer Protocol. The standard protocol for sending emails across the
Internet.
SNMPSimple Network Management Protocol. An Internet protocol used to manage and
monitor network devices and their functions.
SSID — Service Set IDentifier. The name assigned to a Wi-Fi network.
TCP/IP Transmission Control Protocol/Internet Protocol. The set of communications
protocols used for the Internet and other similar networks.
TFTP Trivial File Transfer Protocol. An Internet software utility for transferring files that is
simpler to use than FTP, but does not provide user authentication and directory visibility
supported by FTP.
Telnet A user command and underlying TCP/IP protocol that allows a user on one computer
to log into another computer that is part of the same network.
TTY Text Telephones (TTY), also known as Telecommunications Device for the Deaf (TDD), are
used by the deaf, hardofhearing, and individuals with speech impairments to communicate.
UDP User Datagram Protocol (UDP) is a communications protocol that offers a limited
amount of service when messages are exchanged between computers in a network that uses
the Internet Protocol (IP). UDP is an alternative to the Transmission Control Protocol (TCP) and,
together with IP, is sometimes referred to as UDP/IP.