daemon, 5
data confidentiality service, 73
Data Encryption Standard (DES), 88
data integrity mechanism, 77
data integrity service, 74
data origin, authentication service, 73
data validation and certification server, 347
data validation certificate, 347
data-driven attack, 197
Defense Advanced Research Projects Agency (DARPA), 12
Defense Message System, 324
degradation of service, 62
delta CRL, 350
demilitarized zone (DMZ), 187
denial of service, xv, 59
deoxyribonucleic acid, 83
Department of Commerce (DoC), 105
dial-up client, 209
dial-back system, 118
differentiated service, 39
digest authentication, 292
digital envelope, 98
digital signature giving message recovery, 92
digital signature mechanism, 76
digital signature scheme, 92
Digital Signature Standard (DSS), 97
digital signature with appendix, 92
direct trust model, 94
directory information tree (DIT), 95
Distance Vector Protocol, 43
distinguished encoding rules, 341
distinguished name, 94, 339
Distributed Computing Environment (DCE), 296
distributed denial of service, xv, 60
distributed system, 4
DNS security, 63, 293
DNSSEC, 293
domain name system (DNS), 51
domain of interpretation, 243
draft international standard, 28
Drawbridge, 153
dual-homed firewall, 182
dual-homed host, 182
dynamic packet filtering, 137, 157
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