Network+ 2005 In Depth (P30) docx

See lpd line printer daemon lpd, 445 link segment... Login dialog box, 472login directory, 425 logon problems, 531 logon process, 360 logon restrictions, 634 loopback adapter.. See bus m

Java System Directory Server Enterprise Edition, 445

jobs, finding, 20–21

jumper, 205, 240

K

Ka-band frequency, 325

Kbps (1 kilobit per second), 120

KDC (Key Distribution Center), 650, 659

kerberos, 649–651, 659

kernel module, 425, 445

kernels, 424

definition, 445

for UNIX-type operating systems, 424–425

key, 659

Key Distribution Center (KDC), 650, 659

key encryption, 636–637, 655

key management, 644, 659

key pair, 640, 659

kill process command, 429

Ku-band frequency, 325

L

L2TP (Layer 2 Tunneling Protocol), 338, 346

label, 186

LAN Emulation (LANE), 269, 285

LAN gateway, 233

LAN (local area networks), 6–7, 25, 490, 592–593, 631

LANE (LAN Emulation), 269, 285

last mile See local loop

late collisions, 553, 561

latency

definition of, 127

transmission flaw, 79–80

Layer 2 Tunneling Protocol (L2TP), 338, 346

Layer 3 switch, 227–228, 240

Layer 4 switch See Layer 3 switch

layer problems, physical, 533–536

L-band frequency, 325

LC (Local Connector), 127

LDAP (Lightweight Directory Access Protocol),

365, 408

leadership abilities, 19

leaf objects, 367, 408, 463 leasing

DHCP, 155–156 terminating DHCP, 156–157

LED indicators, 209 LEO (low earth orbiting), 324, 346 Level 1 wire, 127

license tracking, 16, 25 licensing, 368–369

fees, 418 per seat, 369 per server, 394 per user, 368 for servers, 466 site license, 369 software license, 419

Lightweight Directory Access Protocol (LDAP),

365, 408 line conditioning, 579 line-of-sight (LOS), 111, 127 line-of-sight (uLOS), 81

line printer daemon See lpd

line printer daemon (lpd), 445

link segment See uLOS (line-of-sight)

Linux, 420

definition, 445 hardware requirements, 422–423 installing, 432

server, 422–423 teachers group for, 434–435 users and groups establishing on, 434–435 workstation, 362

LLC (Logical Link Control) sublayer, 46, 57 LNK light, 209

load balancing, 15–16, 25, 584–585, 608 local accounts, 399, 409

local area networks (LAN), 6–7, 25, 490, 592–593, 631 local collisions, 553, 561

Local Connector (LC), 127 local loop, 300, 346 locks, 625–626, 654 logical addresses, 148 logical connectivity, 536–537 Logical Link Control (LLC) sublayer, 46, 57 logical topology, 256–257, 285

Login dialog box, 472

login directory, 425

logon problems, 531

logon process, 360

logon restrictions, 634

loopback adapter See loopback plug

loopback address, 150, 186

loopback plug, 213, 240

loopback test, 150, 186

LOS (line-of-sight), 111, 127

low earth orbiting (LEO), 324, 346

lpd (line printer daemon), 445

lpr command, 446

lpr file command, 429

ls command, 430

ls -la command, 428

M

MAC addresses, 46, 57, 148

MAC (Media Access Control) sublayer, 46, 57

Mac OS X Server, 418, 420, 423

definition, 446

hard disk component for, 423

hardware requirements, 423

memory component for, 423

system component, 423

teachers group for, 435

users and groups establishing on, 435–437

macro viruses, 569–570, 574, 608

magnetic tape, 596–597

mail group, 434

mail retrieval protocol, 500

mail services, 14–15

definition of, 25

TCP/IP, 498–501

main bus See bus

maintenance, cost of, 81

managed hubs See intelligent hub

management information base (MIB), 681, 700

management systems, change, 544–545, 561, 567

man command, 429

MAN (metropolitan area network), 8, 25

manual pages, 427–428, 446

manuals, 539

map, 409

mapping, 361 Marketing Department, 531 mask, 152

MAUs (Multistation Access Units), 215, 240 maximum transmission unit (MTU), 40–41, 57 Mbps (1 megabit per second), 120

MCSE (Microsoft Certified Systems Engineer), 26

certification, 19–20 definition of, 25

measurements, baseline, 678–680 Mechanical Transfer Registered Jack (MT-RJ), 128 media, 595, 605

backup, 595–598 converters, 81–82, 127 optical, 596

Media, Domain 1.0, 706–708 Media Access Control (MAC) sublayer, 46, 57 medium earth orbiting (MEO), 324, 346 member servers, 386, 409

memory, 373

component, 422–423 EEPROM (electrically erasable programmable read-only memory), 203, 212, 238

model, 378–379, 424 physical memory, 373, 410, 424 range, 211–212, 240

requirements for Windows Server 2003, 378 virtual memory, 373, 379, 412, 424

MEO (medium earth orbiting), 324, 346 mesh topology WAN, 297, 346

message switching, 258, 285 Metaframe option, 335, 347 metropolitan area network (MAN), 8, 25 mget command, 171

MIB (management information base), 681, 700 Microsoft Certified Systems Engineer (MCSE), 26

certification, 19–20 definition of, 25

Microsoft Challenge Authentication Protocol, ver-sion 2 (MS-CHAPv2), 647, 660

Microsoft Challenge Authentication Protocol (MS-CHAP), 646–648, 647–648

Microsoft Challenge Handshake Authentication Protocol, version 2 (MS-CHAPv2), 659 Microsoft Challenge Handshake Authentication Protocol (MS-CHAP), 660

Microsoft Directory Synchronization Services

(MSDSS), 402, 409

Microsoft Management Console (MMC), 382–384,

409

Microsoft Windows Services for NetWare, 402, 409

middleware, 362, 409

milestones, 669, 700

MIME (Multipurpose Internet Mail Extensions),

499, 519

mirroring, 604, 608

disk, 588–589

server, 585–586

mkdir dir command, 429

MMC (Microsoft Management Console), 382–384,

409

MMF (multimode fiber), 95–97, 127

mobile, 127

mobile system vs fixed wireless system, 114

modal bandwidth, 98, 127

modem, 127

modifying authentication protocols, 647–648

modular router, 228, 240

modulation

AM (amplitude modulation), 122

data, 69–70

definition of, 127

FM (frequency modulation), 126

monitor, network, 552–554

Monitor menu, 457, 477

motherboard, 26

mount process, 446

mput command, 171

MRTG (Multi Router Traffic Grapher), 682–683,

701

MS-CHAP (Microsoft Challenge Handshake

Authentication Protocol), 646–648, 647–648,

660

MS-CHAPv2 (Microsoft Challenge Authentication

Protocol, version 2), 647, 659–660

MSDSS (Microsoft Directory Synchronization

Services), 402, 409

MT-RJ (Mechanical Transfer Registered Jack), 128

MTU (maximum transmission unit), 40–41, 57

multicast address, 161, 186

multicasting, 146, 186

multimeter, 548–549, 561

multimode fiber (MMF), 95–97, 127 multipath signals, 111–112, 128 multiplexer (mux), 72–73, 128 multiplexing, 72–74, 128 multiprocessing, 374–375

asymmetric multiprocessing, 406 definition, 409

symmetric multiprocessing, 411, 456 for UNIX-type operating systems, 424

multiprotocol networks, 136, 186 Multipurpose Internet Mail Extensions (MIME),

499, 519 Multi Router Traffic Grapher (MRTG), 682–683, 701

Multistation Access Units (MAUs), 215, 240 multitasking, 373–374, 409

mutual authentication, 647, 660 mux (multiplexer), 72–73, 128

mv file1 file2 command, 429

N

name servers, 165, 187 name space, 187 namespace, 390, 409 naming conventions, 390–392, 463–464 narrowband, 113, 128

NAS (network attached storage), 591–593, 605, 609 native file access, 472–473

NAT (Network Address Translation), 494–496, 519 nbtstat utility, 503–504, 519

NDS (NetWare Directory Services), 477 needs assessment process, 697–698, 701 negative frame sequence checks, 553–554, 561 Net+ (Network+), 26

Net+ (Network+) certification, 19 NetBEUI (NetBIOS Enhanced User Interface), 176–178, 187

NetBIOS (Network Basic Input Output System), 176–178, 187, 503

NetDrive, 473, 477

net mask See subnet mask

NETMON, 561 netstat utility, 429, 502–503, 520 NetStorage tool, 474, 478 NetWare Directory Services (NDS), 477

NetWare Integrated Kernel, 478

NetWare loadable modules (NLMs), 456, 478, 552

NetWare network operating system, 451–480

client services, 471–474

eDirectory, 460–464

establishing users and groups, 468–471

file system, 458–460

hardware requirements, 455

installing and configuring, 466–471

integrated Kernel, 456–458

networking with other operating systems, 474–475

overview of, 452–454

planning for installation of, 464–466

NetWare schema, 468

Network+ examination objectives, 524, 705–714

Network+ (Net+) certification, 19

Network+ practice exam, 715–738

network access method See access

network adapter See Network Interface Cards (NICs)

Network Address Translation (NAT), 494–496, 519

network addresses, 42–43, 57, 148

network administrators, 567

network analyzer See protocol analyzer

network attached storage (NAS), 591–593, 605, 609

network backups, 598

Network Basic Input Output System (NetBIOS),

176–178, 187, 503

network cables, 535

network class, 148, 187

network design, 627–633

network elements, organizing, 365–368

Network File System (NFS), 426, 446

network ID, 148–149, 187, 484

AppleTalk network number, 179, 183

external network number, 185

Network Implementation, Domain 3.0, 711–712

Network Interface Cards (NICs), 9–10, 26, 194–215

installing, 203–215

choosing NIC, 213–215

NIC hardware, 203–205

NIC software, 205–213

types of, 195–202

internal bus standards, 195–198

on-board NICs, 202

peripheral bus standards, 198–201

wireless NICs, 202

network key, 651, 660

Network layer

definition of, 57

in OSI Model, 48–49

network management, 678–684, 701

asset management, 683–684 obtaining baseline measurements, 678–680 performance and fault management, 680–683

network monitor, 552–554, 561–562 Network News Transport Protocol (NNTP), 172–173, 187

network node, 494

network number See network ID network operating systems See NOS (network

oper-ating systems)

network prefix See network ID network problems See troubleshooting network

problems network service providers (NSPs), 293, 347 network services, 26

network status map, 681–682 Network Support, Domain 4.0, 713–714 Network Termination 1 (NT1), 306, 347 Network Termination 2 (NT2), 306–307, 347 Network Time Protocol (NTP), 172, 187 network topologies, 604

networked workstations, adding, 693

networking hardware See hardware

networking media, 80–83 networking professional, becoming, 16–22

developing soft skills, 18–19 finding work in, 20–21 joining professional associations, 21–22 mastering technical challenges, 17–18 pursuing certification, 19–20

networking standards, 31–36 networking terms, 24–28 networks

how used, 13–16 reasons for using, 2 types of, 3–8 client/server network, 4–6 local area network (LAN), 6–7 metropolitan area network (MAN), 8 peer-to-peer network, 3–4

wide area network (WAN), 8

newsgroups, 172, 187 newspaper, searching for work in, 20

New Technology File System (NTFS), 381–382, 409

NFS (Network File System), 426, 446

NIC component

for Linux server, 422

for Mac OS X Server, 423

for Solaris 10, 422

NICs See Network Interface Cards (NICs)

NLMs (NetWare loadable modules), 456, 478, 552

NNTP (Network News Transport Protocol),

172–173, 187

nodes, 10

AppleTalk node ID, 178, 183

definition of, 26

i-node (information node), 430, 445

network node, 494

relationships between, 74

noise, 577, 580

definition of, 128

immunity, 82–83

and fiber-optic cable, 97

of STP and UTP, 90

transmission flaw, 67, 77–78

in wireless signals, 113

NOS (network operating systems), 5–6, 10, 355–375,

402–403

definition of, 26

internetworking, 402–403

networking NetWare network operating system with

other, 474–475

overview of, 355–359

security, 633–634

services and features, 359–375

client support, 360

identifying and organizing network elements,

365–368

managing system resources, 372–375

sharing applications, 368–370

sharing printers, 370–372

upgrades, 689–691

NOS upgrades, 699

Novell Client, 471

Novell Storage Services (NSS), 458, 472, 478

nslookup utility, 504–505, 520

NSPs (network service providers), 293, 347

NSS (Novell Storage Services), 458, 472, 478

-n switch, 174, 502 NT1 (Network Termination 1), 306, 347 NT2 (Network Termination 2), 306–307, 347 Nterprise Linux Services, 475, 478

NTFS (New Technology File System), 381–382, 409 NTP (Network Time Protocol), 172, 187

NWLink IPX/SPX/NetBIOS Compatible Transport protocol, 179–180

O

object, 365, 409 object selector, 471 obsolescence, cost of, 81

OC (Optical Carrier), 320, 347 octets, 148, 187

offline UPS (standby UPS), 578, 609–610 ohmmeter, 548, 562

omnidirectional antenna, 110–111, 128 on-board NICs, 202, 240

on-board ports, 202, 240 one-way trust, explicit, 389, 407 online backups, 598, 609 online UPS, 578, 609 open command, 171 Open Directory, 446 Open Group, 417, 447 OpenLDAP application, 446 Open Shortest Path First (OSPF), 232, 241 open source software, 419, 446

open source UNIX, 418–419 OpenSSH protocols, 660 Open Systems Interconnection (OSI) Model, 36–51, 619–620

Application layer, 38 applying, 47–51 communication between two systems, 48–50 frame specifications, 50–51

Data Link layer, 44–47 definition of, 58 Network layer, 42–44 Physical layer, 47 Presentation layer, 38–39 Session layer, 39 Transport layer, 39–42

operating systems See NOS (network operating

sys-tems); UNIX-type operating system

Optical Carrier (OC), 320, 347

optical loss, 128

optical media, 596, 609

optical time domain reflectometers (OTDRs),

551, 562

options, 139, 144 See also Metaframe option

oral communications, 18

organizational units (OUs), 367, 386, 410, 461–463

OSI See Open Systems Interconnection

OSPF (Open Shortest Path First), 232, 241

OTDRs (optical time domain reflectometers),

551, 562

OUs (organizational units), 367, 386, 410, 461–463

overhead, 69, 128

P

P2P networks, 4, 26

packet, 50

packet-filtering firewalls, 628–631, 660–661

Packet Internet Groper (PING), 173–174, 188

packet switching, 258, 286, 303

padding, 139, 145, 263, 286

paging, 373, 410

PANs (personal area networks), 276, 286

PAP (Password Authentication Protocol), 646, 660

parallel backbone, 255–256, 286

parity error checking, 590, 609

parity mechanism, 609

partial mesh topology, 580

partial mesh WAN, 297, 347

partitions, 380, 410

pass/fail test, 549

passive hubs, 216, 241

passive scanning, 272, 286

Password Authentication Protocol (PAP), 646, 660

passwords, 635, 655

patch cable, 102, 128

patch panel, 102, 128

patches, 684–685, , 699, 701

patterns, 465–466, 478

PBX (private branch exchange), 512, 520

PC Card, 198, 241 pcAnywhere, 332

PCIe See PCI Express

PCI Express, 196, 241 PCI (Peripheral Component Interconnect), 196, 241

PCIx See PCI Express

PCMCIA (Personal Computer Memory Card International Association), 198, 241 PDAs (personal digital assistants), 114, 128 PDs (powered devices), 264, 286

PDUs (protocol data units), 37, 50, 58 peer-to-peer network, 3–4, 26 performance management, 680–683, 698, 701 performance testers, 551, 556

peripheral bus standards, 198–201 Peripheral Component Interconnect (PCI), 196, 241 permanent virtual circuits (PVCs), 303, 348

permissions, file access, 437 per seat, 369, 410

per server, 394, 410 personal area networks (PANs), 276, 286 Personal Computer Memory Card International Association (PCMCIA), 198, 241 personal digital assistants (PDAs), 114, 128 per user, 368, 410

PGP (Pretty Good Privacy), 641, 660 phase, 66, 128

physical address See MAC address

physical connectivity, verifying, 533 Physical layer, 37, 533

definition of, 58

in OSI Model, 48, 50 preventing failures in, 108 problems, 533–536 summery of networking standards, 99–100

physical memory, 373, 410, 424 physical plant changes, 692–697

adding or upgrading equipment, 693–695 backbone upgrades, 696–697

cabling upgrades, 695–696 reversing hardware changes, 697

physical topologies, 246, 250–251

bus topology, 246–248 definition of, 286 ring topology, 248–249 star topology, 249–250

piconet, 277, 286

pilot networks, 676–677, 698, 701

PING (Packet Internet Groper), 173–174, 188

pinging, 173, 187

pipe, 431, 446

pipeline, 431, 446

plain old telephone service (POTS), 299

planning, contingency, 676

plant changes See hardware

platform component, Solaris 10, 422

plenum, 128

PoE (Power over Ethernet), 264–265, 286

pointing device

Linux server, 423

Windows Server 2003, 378

point-to-point, 128

Point-to-Point Protocol over Ethernet (PPPoE),

331, 347

Point-to-Point Protocol (PPP), 331, 347, 646

point-to-point transmission, 74

Point-to-Point Tunneling Protocol (PPTP),

337–338, 347

polling, 680, 701

polymorphic viruses, 572, 609

pools, 459–460, 478

POP (Post Office Protocol), 499–500, 520

populated segment, 81, 128

port forwarding, 643, 660

port number, 158, 188

ports

blocking ports, 629

data ports, 215, 238

destination port, 138

dynamic and private ports, 158, 184

on-board ports, 202, 240

and sockets, 158–160

source port, 138

unprotected ports, 619–620

uplink port, 215, 242

USB (universal serial bus) port, 199–200, 242

well known ports, 158, 190

Post Office Protocol (POP), 499–500, 520

POTS (plain old telephone service), 299

power flaws, 576–577

power loss, 603 Power over Ethernet (PoE), 264–265, 286 power sourcing equipment (PSE), 264, 286 powered devices (PDs), 264, 286

PowerPC, 446 PPPoE (Point-to-Point Protocol over Ethernet),

331, 347 PPP (Point-to-Point Protocol), 331, 347, 646 PPTP (Point-to-Point Tunneling Protocol), 337–338, 347

preamble, 286 preamble signals, 263 predecessor, 701 preemptive multitasking, 374, 410 presentation layer, 48–49, 58, 360 Pretty Good Privacy (PGP), 641, 660 Primary Rate Interface (PRI), 306, 348 print server, 370

print services, 13, 26 printer queue, 371, 410 printers

networked, 694 sharing, 370–372

private branch exchange (PBX), 512, 520 private key encryption, 637–638, 660, 662 private ports, 158

probe, 272, 286 process, 374, 410 processor component, Linux server, 422 professional associations, joining, 21–22 programmers, 416

programming environments, 416 projects

feasibility, 670 management, 668–778 assessing needs, 671–672 determining project feasibility, 670 project planning, 673

setting project goals, 672–673 testing and evaluation, 677–678 planning, 673

setting goals, 672–673 testing management, 677–678

promiscuous mode, 552, 562

propagation, signal, 111–112

proprietary UNIX, 418, 446

protocol analyzers, 554–556, 562

protocol data units (PDUs), 37, 50, 58

protocols, 11, 26, 36–37, 135–192

AppleTalk, 178–179

binding protocols on Windows XP workstation,

179–180

Domain 2.0, 708–711

IPX/SPX (Internetwork Packet

Exchange/Sequenced Packet Exchange),

175–176

NetBIOS and NetBEUI, 176–178

overview of, 136

security risks with, 620–621

for servers, 465

TCP/IP (Transmission Control Protocol/Internet

Protocol), 137–174

addressing in IPv6 (IP version 6), 160–161

addressing in TCP/IP, 148–152

assigning IP addresses, 152–158

host names and DNS (domain name system) See

host names

sockets and ports, 158–160

TCP/IP Application Layer Protocols, 169–174

proxy, 660

proxy servers, 631–632, 656–657, 660

proxy services, 655, 661

ps -ef command, 428

PSE (power sourcing equipment), 264, 286

PSTN (Public Switched Telephone Network),

299–302, 348

-p switch, netstat, 503

public key encryption, 640

public key encryption (asymmetric encryption), 640,

657, 661

public key server, 639, 661

public network, 494

public relations specialist, 625

public rights, 633–634

Public Switched Telephone Network (PSTN),

299–302, 348

punch-down block, 102, 128

put command, 171

PVCs (permanent virtual circuits), 303, 348

Q

QoS (quality of service), 269, 286 quit command, 171, 644

R

radiation pattern, 110, 128 radiofrequency interference (RFI), 77, 129 RADIUS (Remote Authentication Dial-In User Service), 645, 661

RADIUS server, 661 RAID (Redundant Array of Independent Disks), 587–588, 604–605, 609

RARP (Reverse Address Resolution Protocol),

147, 188 RAS (Remote Access Service), 329, 348 RC4 technique, 640, 661

-r command, netstat, 429, 502 RDN (relative distinguished name), 391, 410 RDP (Remote Desktop Protocol), 332–333, 348 reassembly, 41, 58

reassociation, 272, 286 recordable DVD, 596, 610 recovery contingencies, 601–602 recovery planning, 601

recruiters, enlisting to find work, 21 Red Hat Enterprise, 419

redirector, 360, 410 redundancy, 567, 582, 584–585, 604, 610 Redundant Array of Independent Disks (RAID), 587–588, 604–605, 609

reflection, 111, 129 regeneration, 79, 129 Regional Internet Registries (RIRs), 35, 58 Registered Jack 11 (RJ-11), 129

Registered Jack 45 (RJ-45), 129 registered ports, 158, 188 relationships, 388–390 relative distinguished name (RDN), 391, 410 release

definition of, 188 TCP/IP settings, 156

remote access, 632

definition of, 348 protocols, 331–332

Remote Access Service (RAS), 14, 329, 329–330, 348,

655 See also access server

Remote Authentication Dial-In User Service

(RADIUS), 645, 661

remote connectivity, 328–336

dial-up networking, 328–329

remote access protocols, 331–332

remote access servers, 329–330

remote control, 332–335, 349, 632–633

terminal services, 335

Web portal, 336

Remote Desktop feature, 332, 348

Remote Desktop Protocol (RDP), 332–333, 348

Remote Manager, 457, 468, 478

remote user, 13, 27

removable disk drives (external disk drives), 597–598,

610

Rendezvous, 169, 188

repeaters, 79, 129, 215–218

replication, 386, 411, 585, 610

Request to Send/Clear to Send (RTS/CTS), 271, 287

reserved, 139

reserved addresses, 486

resolutions, recording, 543–544

resolvers, 164, 188

resource record, 165, 183, 188

resources, 2, 701

definition of, 27

restrict access to, 437

response policy, 625

restoration of data, 16

restore, 27

restrictions, logon, 634

results, problem solutions, 541

Reverse Address Resolution Protocol (RARP),

147, 188

reversing software upgrades (backleveling), 691–692,

699–700

revisions, 684–685

RFI (radiofrequency interference), 77, 129

RG-6 cable, 129

Rijndael algorithm, 638, 661

ring topology, 248–249, 257, 287, 295, 348

RIP (Routing Information Protocol), 231–232, 241 RIRs (Regional Internet Registries), 35, 58 risers, 129

risks, security See security

RJ-11 (Registered Jack 11), 129 RJ-45 (Registered Jack 45), 129 rmdir dir command, 429

rm file command, 429 root, 433, 446 root domains, 388, 411 root servers, 164, 188 round trip time (RTT), 79, 129 routable, 137, 188

route, 58 router capable, 512 routers, 43, 227–233, 241

adding, 694–695 brouter, 233 definition of, 58 features and functions, 228–231 modular router, 228, 240 router capable, 512 routing protocols, 231–232 and subnets, 490–491

Routing and Remote Access service (RRAS), 330, 348

Routing Information Protocol (RIP), 231–232, 241 routing protocols, 231, 241

routing switch See higher-layer switches; Layer 3

switch routing table, 493 royalties, systems sold, 419 RRAS (Routing and Remote Access service), 330, 348

RSA algorithm, 640, 661 -r switch, 174

for nbtstat, 504 for netstat, 503

RTS/CTS (Request to Send/Clear to Send), 271, 287 RTT (round trip time), 79, 129

runts, 224, 242, 553, 562

RX light, 209

safety precautions, 695

sags (brownouts), 576–577, 606, 610

Samba file system, 426, 440, 446

SANs (storage area networks), 593–594, 605, 610

satellites, 324–327

S-band frequency, 325

scalability

of fiber-optic cable, 97

networking media, 81

of solution, 538

of STP and UTP, 90

scalable, 27

scanning, 287

active, 271–272, 283

heuristic, 573, 608

passive, 272, 286

signature, 573, 610

scattering, 111, 129

scatternet, 277, 287

SCO Group, 417, 447

scope of change, 537–538

scp filename1 filename2 command, 643

SCP (Secure CoPy), 643, 661

screening firewalls (packet-filtering firewalls),

628–631, 660–661

SC (Subscriber Connector or Standard Connector),

129

SDH (Synchronous Digital Hierarchy), 319, 349

second-level support analyst, 543

Secure CoPy (SCP), 643, 661

Secure File Transfer Protocol (SFTP), 643–644, 662

secure passwords, 655

Secure Shell (SSH), 642–643, 661–662

Secure Sockets Layer (SSL), 641–642, 661–662

security, 483, 615–666

audits, 16, 27, 616–617, 653, 661

authentication protocols, 644–651

CHAP and MS-CHAP, 646–648

EAP (Extensible Authentication Protocol), 649

PAP (Password Authentication Protocol), 646

RADIUS and TACACS, 645

default settings, 621

effective security policy, 622–625 e-mail, 641

Encapsulating Security Payload (ESP), 644, 658 encryption, 636

IPSec (Internet Protocol Security), 644 key encryption, 636–637

PGP (Pretty Good Privacy), 641 private key encryption, 637–638 public key encryption, 639–640 SCP (Secure CoPy), 643 SFTP (Secure File Transfer Protocol), 643–644 SSH (Secure Shell), 642–643

SSL (Secure Sockets Layer), 641–642 groups for, 364

IEEE 802.11i security protocol, 653 implications, 538

Internet access, 621–622 Internet Protocol Security (IPSec), 659 Intranets policies, 498

IPSec (Internet Protocol Security), 644, 659 network operating system (NOS), 633–634 physical, 625–627

policies, 498, 654, 662 content, 624 effective, 622–625 goals, 622–624 proxy servers, 631–632 remote access, 632 risks, 617–622, 654 security risks, 617–622 system security, 633–634 through groups, 364, 438 TLS (Transport Layer Security), 642, 663 transmission risks with, 619–620 wireless network, 651–653 wireless network security, 651–653

segment, 10, 27, 40, 58 segmentation, 40, 58 self-healing, 349 Sequence Control field, 274 sequence number, 138 Sequenced Packet Exchange (SPX), 175, 188 sequencing, 41, 58

serial backbone, 252–253, 287