Specifications

Glossary-23
TherulesinanACLareknownasaccesscontrolentries(A CEs).SeealsoACE.
seed
(1)Aninputtoapseudorandomnumbergenerator(PRNG),thatisgenerall y thecombinationof
twoormoreinputs.(2)TheRoamAboutSwitchthatdistributesinformationtoalltheRoamAbout
switchesinaMobilityDomain™group.
SentrySweep™
Aradiofrequency(RF)detectionsweepthatrunscontinuouslyonthedisabledradiosinaMobility
Domain™group.SeealsoRFdetectionsweep.
session
Arelatedsetofcommunicationtransactionsbetweenanauthenticateduser(client)andthespecific
stationtowhichtheclientisbound.
Session Initialization Protocol
SeeSIP.
service set identifier
SeeSSID.
SHA
Securehashingalgorithm.Aone‐wayhashingalgorithmusedinmanyauthenticati onalgorithms
andalsoforkeyderivationinmanyalgorithms.ASHAproducesa160‐bithash.
shared secret
Astatickeydistributedbyanout‐of‐bandmechanismtoboththesenderandreceiver.Alsoknown
asasharedkeyorpresharedkey(PSK),asharedsecretisusedasinputtoaone‐wayhashalgorithm.
Whenasharedsecretisusedforauthentication,ifthehash
outputofbothsenderandreceiveris
thesame,theysharethesamesecretandareauthenticated.Asharedsecretcanalsobeusedfor
encryptionkeygenerationandkeyderivation.
SIP
SessionInitializationProtocol.Asignalingprotocol thatestablishesreal‐timecallsandconferences
overIPnetworks.
Spanning Tree Protocol
SeeSTP.
SSH
SecureShellprotocol.ATelnet‐likeprotocolthatestablishesanencryptedsession.
SSID
Servicesetidentifier.Theuniquenamesharedamongallcomputersandotherdevicesinawireless
LAN(WLAN).
SSL
SecureSocketsLayerprotocol.AprotocoldevelopedbyNetscapeformanagingthesecurityof
messagetransmissionovertheInternet.SSLhasbeensucceededbyTransportLayerSecurity(TLS)
protocol,whichisbasedonSSL.Thesocketspartofthetermreferstothesocketsmethodofpassing
databackandforth
betweenaclientandaserverprograminanetworkorbetweenprogramlayers
inthesamecomputer.SSLusesthepublic‐and‐privatekeyencryptionsystemfromRSAData
Security,Inc.,whichalsoincludestheuseofadigitalcertificate.SeealsoHTTPS;TLS.