T
TACACS/TACAS+ (Terminal Access Controller Access Control System)
as AAA mechanism, 281
accounting, 301 “302
authentication, 293 “295
as authentication server, 48, 250
authorization, 297 “300
dial-in remote access, 152
login authentication, 287 “292
TCP (Transmission Control Protocol)
communication over, 409
disabling small servers on IOS devices, 164
filtering rules and, 128
TCP three-way handshake, 409
technical interview, 503 “504
Telnet
compared with 3DES/SSH, 103
as insecure protocol, 110
preventing remote administration, 42 “44
securing remote administration, 44 “48
Temporal Key Integrity Protocol (TKIP), 267
Terminal Access Controller Access Control System. See TACACS/TACAS+ (Terminal Access Controller Access Control System)
testing
change planning and, 434 “436
upgrading and, 452
TFTP (Trivial File Transfer Protocol), 64, 454
threats. See also risk analysis
defining, 28
e-mail content filters, 234
identifying, 489 “490
Internet content filters, 211 “212
list of common, 489
protection for all known, 393 “396
ratings, 24 “25
risk analysis and, 488
TKIP (Temporal Key Integrity Protocol), 267
training. See also staffing
computer-based, 512
conferences, 512
cross-training, 510
instructor-led, 511
lab environment, 513 “514
overview, 510
resources for, 510 “511
self-study, 513
users, 28
value and cost of, 511
vendor, 512 “513
Transmission Control Protocol. See TCP (Transmission Control Protocol)
transport mode, AH and ESP, 139 “140
Trivial File Transfer Protocol (TFTP), 64, 454
trust
gaining management, 485 “486
gaining user , 481
tunnel mode, AH and ESP, 139 “141
tunneling protocols, removing unnecessary, 123 “125
tunneling rules, IPsec, 340 “342