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Network security
Network security

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1.2 Abbreviations

The table below shows the abbreviations that are used throughout this unit, and their meanings.

Table 1 Abbreviations
ADSLasymmetric digitalPGPPretty Good Privacy
subscriber linePINGpacket internet groper
DESData Encryption StandardPSTNpublic switched telephone
DMZdemilitarised zonenetwork
DNSdomain name systemRC2Rivest cipher 2
DSSDigital Signature StandardRC4Rivest cipher 4
FTPfile transfer protocolRSARivest, Shamir and
IANAInternet Assigned NumbersAdleman block cipher
AuthorityS-HTTPsecure hypertext transfer
ICMPinternet control messageprotocol
protocolS/MIMEsecure/multipurpose internet
IDEAInternational Datamail extensions
Encryption AlgorithmSETsecure electronic transaction
IPinternet protocolSHAsecure hash algorithm
IPSecinternet protocol securitySIMsubscriber identity module
ISDNintegrated services digitalSMTPsimple mail transfer
ISOInternational OrganizationTCPtransmission control
for Standardizationprotocol
LANlocal area networkUDPuser datagram protocol
MD5message digest 5VPNvirtual private network
MSPmessage security protocolXORexclusive-OR
NSANational Security Agency3DESTriple Data Encryption
OSIopen systemsStandard