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Dynamic Host Configuration ProtocolDHCP
Domain Name Service - computers communicate with computers in remote networks using IP addresses;
DNS servers translate names into IP addresses; without DNS servers, you would have to remember all IP
addresses and couldn't work with names (e.g. www.lancom.de)
DNS
area of network closed to outside; => IntranetDomain
Download / downstream denotes the direction of dataflow in a WAN. Downstream is the direction from the
head end or Internet to the participant connected to the network.
Download /
Downstream
Distribution SystemDS
Digital Subscriber Line - DSL procedures include all procedures for digital-broadband use of telephone lines,
such as ADSL, HDSL, SDSL, VDSL and so on, which are also called xDSL.
DSL
Direct Sequence Spread Spectrum; code multiplex -- band spreading processDSSS
IPsec-VPN implementation which allows the transparent connection of local networks into a VPN solution,
even when their routers work with dynamic addresses (dial-up)
Dynamic DNS
Extensible Authentication ProtocolEAP
EAP variant which uses password for one-sided authenticationEAP-MD5
EAP Transport Layer Security; EAP variant which uses certificates for mutual authenticationEAP-TLS
EAP Tunneled Transport Layer Security; EAP variant which uses certificates for mutual authenticationEAP-TTLS
Effective Isotropic Radiated PowerEIRP
Extended Service SetESS
Extended Service Set Identity; “network name" of the wireless LANESSID
Strand or star-formed physical transport medium; all stations can send simultaneously; collisions are detected
and corrected through the network protocol
Ethernet
Frequency Hopping Spread Spectrum; frequency skipping band spread procedureFHSS
Protective mechanism for an Intranet against attacks from outsideFirewall
Number of oscillations per second (given in Hertz; 1 Hz = 1 oscillation per second; GHz = Gigahertz = 1
billion Hertz or oscillations per second)
Frequency
File Transfer Protocol enables data transfer between different systems and simple file manipulation; FTP is
based on the TCP transmission protocol
FTP
Contiguous frequency range which has the same transmission propertiesFrequency band
Every radio application uses globally regulated radio frequenciesRadio frequency
Network component which provides access to other network components on a layer of the => OSI model.
Packets which do not go to a local partner are sent to the gateway. The gateway takes care of communication
with remote networks.
Gateway
Network component; distributor; collector; also used to translate from one connection type to anotherHub
Locally limited wireless network with a base station with Internet access; public wireless Internet accessHotSpot
Roaming between the cells of a wireless network using IAPP (Inter Access Point Protocol)IAPP roaming
Independent Basic Service SetIBSS
Intrusion Detection System -- earliest possible detection of attacks on the networkIDS
Institute of Electrical and Electronics Engineers, New York - www.ieee.orgIEEE
Internet ProtocolIP
Combination of PAT (Port Address Translation) and NAT (Network Address Translation) from LANCOM
Systems process used for connection of an intranet (multiple workstations) to the Internet over a single IP
address; simultaneously, the internal computers are protected from attacks from outside
IP masquerading
Internet Protocol SecurityIPSec
2023
Reference Manual
20 Appendix
2023


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