Appendix A
A.1 Glossary of Terms
SCALANCE W1750D CLI
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Function Manual, 03/2019, C79000-G8976-C452-04
SNMP
Simple Network Management Protocol. SNMP is a TCP/IP standard protocol
for managing devices on IP networks. Devices that typically support SNMP
include routers, switches, servers, workstations, printers, modem racks, and
more. It is used mostly in network management systems to monitor network-
attached devices for conditions that warrant administrative attention.
SNMPv1
Simple Network Management Protocol version 1. SNMPv1 is a widely used
network management protocol.
SNMPv2
Simple Network Management Protocol version 2. SNMPv2 is an enhanced
version of SNMPv1, which includes improvements in the areas of perfor-
mance, security, confidentiality, and manager-to-manager communications.
SNMPv2c
Community-Based Simple Network Management Protocol version 2.
SNMPv2C uses the community-based security scheme of SNMPv1 and does
not include the SNMPv2 security model.
SNMPv3
Simple Network Management Protocol version 3. SNMPv3 is an enhanced
version of SNMP that includes security and remote configuration features.
SNR
Signal-to-Noise Ratio. SNR is used for comparing the level of a desired sig-
nal with the level of background noise.
SNTP
Simple Network Time Protocol. SNTP is a less complex implementation of
NTP. It uses the same , but does not require the storage of state over ex-
tended periods of time.
SOAP
Simple Object Access Protocol. SOAP enables communication between the
applications running on different operating systems, with different technolo-
gies and programming languages. SOAP is an XML-based messaging proto-
col for exchanging structured information between the systems that support
web services.
SoC
System on a Chip. SoC is an Integrated Circuit that integrates all compo-
nents of a computer or other electronic system into a single chip.
source NAT Source NAT changes the source address of the packets passing through the
router. Source NAT is typically used when an internal (private) host initiates a
session to an external (public) host.
SSH
Secure Shell. SSH is a network protocol that provides secure access to a
remote device.
SSID
Service Set Identifier. SSID is a name given to a WLAN and is used by the
client to access a WLAN network.
SSL
Secure Sockets Layer. SSL is a computer networking protocol for securing
connections between network application clients and servers over the Inter-
net.
SSO
Single Sign-On. SSO is an access-control property that allows the users to
log in once to access multiple related, but independent applications or sys-
tems to which they have privileges. The process authenticates the user
across all allowed resources during their session, eliminating additional login
prompts.
STBC
Space-Time Block Coding. STBC is a technique used in wireless communi-
cations to transmit multiple copies of a data stream across a number of an-
tennas and to exploit the various received versions of the data to improve the
reliability of data transfer.