S/Key, 116
S/MIME, 21, 323
S/MIME mail security, 324
SA bundle, 229
SAFER, 89
sandbox, 198
screened host firewall, 185
screened subnet firewall, 186
screening router, 136, 142
secret key cryptography, 87
secure electronic transaction, 366
secure hash algorithm 1, 86
Secure HTTP, 252
Secure Hypertext Transfer Protocol (S-HTTP), 292
secure Internet gateway, 129
Secure Multipurpose Internet Mail Extensions (S/MIME), 323
Secure RPC Authentication (SRA), 285
Secure Shell (SSH), 22, 286
Secure Sockets Layer (SSL), 251
Secure Telnet, 285
SecurID token, 115
security association, 218, 228
security association database (SAD), 228
security audit trail, 78
security gateway, 129
security identifier, 306
security label, 78
security mechanism management, 79
security parameters index (SPI), 228
security policy database (SPD), 228
Security Protocol 3, 224
Security Protocol 4, 252
security recovery, 78
security scanner, 373
security scanning, 373
security service management, 79
selected field connection integrity service, 74
selected field connectionless integrity service, 74
selection criteria, 146
selective field confidentiality service, 74
sequence number guessing attack, 64
serial line IP, 205
serial number, 341
server, 5
server public key pair, 288
service, 6
service access policy, 133, 134, 145
service ticket, 299
SESAME, 305
session-unique keying, 229
SHA-1, 86
signature algorithm, 341
simple authentication and security layer (SASL), 256
simple distributed security infrastructure, 339
Simple Key-management for Internet Protocols (SKIP), 236
Simple Mail Transfer Protocol (SMTP), 50, 291
Simple Network Management Protocol (SNMP), 50, 79
simple public key infrastructure, 339
single sign-on, 320
SKEME, 237
smurf attack, 59
SOCKS, 21, 163, 166, 167
socksified client, 163
software patent, 103
SPX, 295
SSH Authentication Protocol, 289
SSH Connection Protocol, 289
SSH Transport Layer Protocol, 289
SSL Alert Protocol, 260
SSL Application Data Protocol, 260
SSL ChangeCipherSpec Protocol, 260
SSL gateway, 277
SSL Handshake Protocol, 258, 260
SSL proxy server, 277
SSL Record Protocol, 257, 258
SSL Tunneling Protocol, 275
SSLeay, 268
SSLftp, 290
SSLref, 268
SSLTel, 284
SSLtelnet, 284
standard, 6
standards for interoperable LAN/MAN security (SILS), 206
stateful inspection, 137, 157
stateful multilevel inspection, 137
station-to-station, 236
STD subseries, 26
STEL, 285
strong collision resistant, 85
strong one-way hash function, 85
Stunnel, 269
subject, 76, 341
swIPe, 225
symmetric cryptography, 87
SYN cookie, 61
SYNDefender, 190
SYNDefender Gateway, 191
SYNDefender Relay, 191
syslog mechanism, 22
system security management, 79
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