Appendix A
A.1 Glossary of Terms
SCALANCE W1750D CLI
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IKEv1
Internet Key Exchange version 1. IKEv1 establishes a secure authenticated
communication channel by using either the pre-shared key (shared secret),
digital signatures, or public key encryption. IKEv1 operates in Main and Ag-
gressive modes. See RFC 2409.
IKEv2
Internet Key Exchange version 2. IKEv2 uses the secure channel established
in Phase 1 to negotiate Security Associations on behalf of services such as
IPsec. IKEv2 uses pre-shared key and Digital Signature for authentication.
See RFC 4306.
IoT
Internet of Things. IoT refers to the internetworking of devices that are em-
bedded with electronics, software, sensors, and network connectivity features
allowing data exchange over the Internet.
IPM
Intelligent Power Monitoring. IPM is a feature supported on certain APs that
actively measures the power utilization of an AP and dynamically adapts to
the power resources.
IPS
Intrusion Prevention System. The IPS monitors a network for malicious activi-
ties such as security threats or policy violations. The main function of an IPS
is to identify suspicious activity, log the information, attempt to block the ac-
tivity, and report it.
IPsec
Internet Protocol security. IPsec is a protocol suite for secure IP communica-
tions that authenticates and encrypts each IP packet in a communication
session.
IPSG
Internet Protocol Source Guard. IPSG restricts IP address from untrusted
interface by filtering traffic based on list of addresses in the DHCP binding
database or manually configured IP source bindings. It prevents IP spoofing
attacks.
IrDA
An industry-sponsored organization set up in 1993 to create international
standards for the hardware and software used in infrared communication
links. In this special form of radio transmission, a focused ray of light in the
infrared frequency spectrum, measured in terahertz (THz), or trillions of hertz
(cycles per second), is modulated with information and sent from a transmit-
ter to a receiver over a relatively short distance.
ISAKMP
Internet Security Association and Key Management Protocol. ISAKMP is
used for establishing Security Associations and cryptographic keys in an
Internet environment.
ISP
Internet Service Provider. An ISP is an organization that provides services for
accessing and using the Internet.
JSON
JavaScript Object Notation. JSON is an open-standard, language-
independent, lightweight data-interchange format used to transmit data ob-
jects consisting of attribute–value pairs. JSON uses a "self-describing" text
format that is easy for humans to read and write, and that can be used as a
data format by any programming language.
Kbps
Kilobits per second.
KBps
Kilobytes per second.
keepalive
Signal sent at periodic intervals from one device to another to verify that the
link between the two devices is working. If no reply is received, data will be
sent by a different path until the link is restored. A keepalive can also be used
to indicate that the connection should be preserved so that the receiving de-
vice does not consider it timed out and drop it.