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Technical Terms and Abbreviations
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DMZ
DMZ or demilitarized zone is a physical or logical subnetwork that contains
and exposes an organization's external-facing services to an untrusted
network, usually a larger network such as the Internet. The purpose of a DMZ
is to add an additional layer of security to an organization's local area network
(LAN): an external network node can access only what is exposed in the DMZ,
while the rest of the organization's network is firewalled. The DMZ functions as
a small, isolated network positioned between the Internet and the private
network and, if its design is effective, allows the organization extra time to
detect and address breaches before they would further penetrate into the
internal networks.
ESPA 4.4.4
ESPA 4.4.4 is a protocol controlling wireless pagers. It uses ISO 1745, point-
to-point on RS232 as data link layer. The AlphaCom can use this in two ways:
Output: Sends a start paging message to a wireless pager transmitter either
due to manual action by a user, or by automatic action such an activation of an
input (alarm).
Input: The AlphaCom can be set up to look like a pager transmitter. The
AlphaCom inspects the display text and generates events to the Event Handler
which do a range of actions. (Fire Alarm protocol). The ESPA 4.4.4 message is
finally forwarded to one of the AlphaCom’s pager protocol outputs.
FEP
Front End Processor is a computer that extends and distributes connectivity to
field networks. The purpose is to off-load from the host computer the work of
managing the peripheral devices, transmitting and receiving messages, packet
assembly and disassembly, error detection, and error correction
Firewall
Firewall is a network security system that monitors and controls the incoming
and outgoing network traffic based on predetermined security rules.
HDB
History Database. Desigo CC History Database server manages historical data
collected from subsystems and user activities. The server uses Microsoft SQL
to store, manage and maintain the historic data of the system.
IEC
The International Electrotechnical Commission is an international standards
organization that prepares and publishes International Standards for all
electrical, electronic and related technologies – collectively known as
electrotechnology.
IIS
Internet Information Services is an extensible web server created by Microsoft
for use with the Windows NT family. IIS supports HTTP, HTTP/2, HTTPS,
FTP, FTPS, SMTP and NNTP.
IPv4
Internet Protocol version 4 (IPv4) is the fourth version of the Internet Protocol
(IP). It is one of the core protocols of standards-based internetworking
methods in the Internet, and was the first version deployed for production in
the ARPANET in 1983.
IPv4 is a connectionless protocol for use on packet-switched networks. It
operates on a best effort delivery model; in that it does not guarantee delivery,
nor does it assure proper sequencing or avoidance of duplicate delivery.
These aspects, including data integrity, are addressed by an upper layer
transport protocol, such as the Transmission Control Protocol (TCP).
IPv6
Internet Protocol version 6 is the most recent version of the Internet Protocol
(IP), the communications protocol that provides an identification and location
system for computers on networks and routes traffic across the Internet. IPv6
was developed by the Internet Engineering Task Force (IETF) to deal with the
long-anticipated problem of IPv4 address exhaustion. IPv6 is intended to
replace IPv4.