Index_P

P

packet filtering, 368, 369, 539

packet length field, 120

packet switching, 539

packet type field, 120

packets, 539

in Data Link layer, 64

in IPX/SPX, 120

netstat for, 170

padding field, 113

parity, 423

passive caching, 135

passive detection, 539

passive hubs, 62–63, 269, 539

passive intruder detection, 379

passwords

automatic account lockouts, 362–363

in client/server networks, 10

expiration of, 363

in FTP, 182

histories of, 363–364, 539

for logins, 458–459

in peer-to-peer networks, 9

policies for, 391

in share-level security, 356

in SLIP, 331

strong, 360–362

unique, 363–364

in user-level security, 356

patch cables, 267–268, 464, 497, 539

patch panels, 267–268, 539

patches, 441, 539

applying, 442–443

need for, 441

policies for, 392

sources of, 442

PCONSOLE utility, 216

PDCs (Primary Domain Controllers), 231, 542

peer-to-peer networks, 8–9, 9, 539

performance in clustering, 410

Performance Monitor, 494

performance-monitoring tools, 493–494

peripherals, 274, 539

permanent virtual circuits (PVCs), 326, 540

PGP (Pretty Good Privacy), 388, 542

physical addresses in Data Link layer, 64

physical conditions in troubleshooting, 496–497

Physical layer, 56, 540

bus topology in, 57, 58

hubs in, 62–63, 62

MAUs in, 63, 63

mesh topology in, 59, 59

NICs in, 60, 60

repeaters in, 61, 61–62

ring topology in, 58, 59

star topology in, 58, 58

transceivers in, 60–61

physical media, 12, 21

coaxial cable, 21–25, 22–24

fiber-optic cable, 30–32, 31–32

twisted-pair cable, 26–30

physical parallel ports, 540

physical ports, 540

physical security, 7–8, 348

physical topologies, 11–12, 540

backbones and segments, 19–20, 20

bus, 12–14, 12, 540

mesh, 16–17, 16, 540

ring, 15–16, 15, 540

selecting, 20–21

star, 14–15, 14, 540

Ping of Death, 377, 541

ping utility, 185–187, 541

plain old telephone service (POTS), 37, 321–323, 323, 541

Platform Support Module (PSM), 216

plenum-rated coating, 21–22, 541

Plug-and-Play standard, 286

point-to-point communication, 541

Point-to-Point Protocol (PPP), 332–333, 541

Point-to-Point Tunneling Protocol (PPTP), 333–335, 334–335, 541

policies, 389. See also standard operating procedures (SOPs)

breaking, 393–394

clean desk, 389–390

common, 390–393

exit interviews, 394

recording equipment, 390

security audits, 389

polling, 541

POP (Post Office Protocol), 117, 541

Portable Operating System Interface for Computer Environments (POSIX) support, 229

ports, 541

for external modems, 320

in SPSs, 417

in surge protectors, 414

in TCP/IP, 121–123

in UPSs, 418

POSIX (Portable Operating System Interface for Computer Environments) support, 229

Post Office Protocol (POP), 117, 541

POTS (plain old telephone service) lines, 37, 321–323, 323, 541

power management, 412

battery backup systems, 414–417

line conditioners, 418–419

surge protectors, 413–414

power problems

overage, 259–260, 259, 542

quality, 262

underage, 260–262, 261, 542

power switches, checking, 460

PowerPC architecture, 229

PPP (Point-to-Point Protocol), 332–333, 541

PPTP (Point-to-Point Tunneling Protocol), 333–335, 334–335, 541

Presentation layer, 55, 86, 542

Pretty Good Privacy (PGP), 388, 542

primary clients, selecting, 355

Primary Domain Controllers (PDCs), 231, 542

primary logons in workstation configuration, 292–293, 293

print servers, 6, 271–272, 542

print services, 543

printers, naming conventions for, 255

priorities

for data, 55–56

in troubleshooting, 495

private key encryption, 386–387, 543

private networks, 543

proactive intruder detection, 379–380

Process/Application layer, 111

processor options for Windows NT, 229

Project 802, 67–73

proper client selection, 348

property, logging and returning, 394

protocol analyzers, 493, 543

protocol field, 115

protocol suites, 52, 543

protocol switching in firewalls, 367–368, 367

protocols, 256–257, 543

AppleTalk, 92–93

IPX/SPX, 89–91

NetBEUI, 91–92

for security, 371–372

TCP/IP, 87–89

in workstation configuration, 290–292

proxies, 543

proxy cache servers, 370, 543

proxy servers, 6, 369–370, 369, 543

caching, 135

FTP, 371

IP, 133–136, 134, 370

SMTP, 371

Web, 370–371

PSM (Platform Support Module), 216

.PSM extension, 216

PSTNs (public switched telephone networks), 321–323, 323, 544

Public attribute, 543

public key encryption, 387–388, 387, 543

public networks, 544

public switched telephone networks (PSTNs), 321–323, 323, 544

punchdown tools, 302–303, 303, 544

PVCs (permanent virtual circuits), 326, 540

pwd command in FTP, 183