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G-H I-J troubleshooting, 312 UDP, 229 fragmentation, 139 frame, 8, 18 copied errors, 137 type, 159 FTP service number, 296 full duplex, 222 functional map, 2-3, 52 games, Internet, 338 gateway, 8 gateway address, 213 gig Ethernet, 123 hard drive problems, 110-111 hardware analyzer, 342 heterogeneous network, 69 High-Speed Token-Ring, 131 homogenous network, 69 host name, TCP/IP, 15 host number, 16 HOSTS table, 156 HSTR (High-Speed Token-Ring), 131 HTTP (HyperText Transfer Protocol), 19 proxy, 234 socket, 19 troubleshooting, 300 hub, 8, 12 isolating bad port, 55 MAU, 133 network glue, 55 port determination, 391 smart, 55 Token-Ring, 134 troubleshooting, 53 v. switch, 14 HyperText Transfer Protocol. See HTTP
ICQ, 335-336 IMAP (Internet Mail Application Protocol), 323 incremental rollouts, 45 inductive tone generator/tracer, 390 information hiding, 66 interaction problems, 84 interface cards, 101 cleaning, 102 intermittent problem reproduction, 95 Internal error, 135 Internet, 305-326 AIM, 334 AOL NetMail, 334 applications, 78 browsers, 236 choke point, 311 connection identification, 307-310 dialup connection, 309 DMZ, 310 DNS, 312-319 DNS name, 319 firewall, 310, 330-337 games, 338 ICQ, 335-336 InterNIC, 318 IP address, 319 outside connections, 317-319 oversubscription, 379 ping, 311-312 proxy server, 330-337 RealPlayer, 336-337 responsibility, 320 router, 326 routing problems, 319-320 server overload, 321 slowness, 379-380 troubleshooting, 78, 307-326 v. intranet, 24 whois utility, 320 Internet Explorer, proxy settings, 236 Internet Service Provider. See ISP InterNIC, 318 interpacket time, 352
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To access the contents, click the c
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Workshop Q&A Quiz Answers to Quiz Q
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Eminent Domain TCP/IP Graffiti DHCP
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Configuring Your Proxy Proxy Troubl
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Socks Stuff AOL Instant Messenger A
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Table of Contents Introduction: Get
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about your more complex network iss
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Tell Us What You Think! Table of Co
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with me when I was first getting st
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NIC (network interface card) The te
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MAC Attack Previous Table of Conten
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Routers Previous Table of Contents
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technology as the future of local a
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for a TCP/IP address in a large net
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Sprechen Sie DLC? Previous Table of
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socket 80 of the TCP/IP address 167
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program in a name entry; entering t
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WINS Previous Table of Contents Nex
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kind and spit them out as fast as p
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Previous Table of Contents Next Hou
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Figure 2.1 A simple logical map. If
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Figure 2.4 A physical documentation
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the room). This way, you can read t
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un on the server at 9:50 on Monday
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Previous Table of Contents Next Par
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Beware of Vendor Your vendor probab
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call the risk/benefit ratio—the a
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Workshop Q&A Previous Table of Cont
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If you determine that it’s just o
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(see Figure 4.2). Figure 4.2 An Eth
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Division of Labor Previous Table of
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just that the network itself is at
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A Each situation is obviously diffe
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Ruling out is particularly effectiv
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Drive duplication can be a big help
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Previous Table of Contents Next Aft
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5. When you log problems on a given
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if they have a plan, they are going
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Is It a Virus, Doc? Previous Table
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O: Only have tried two other Intern
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A Remember that what a user says is
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Previous Table of Contents Next Loo
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Figure 7.1 Searching several sites
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You’ll also find forums run by th
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Previous Table of Contents Next
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a server but you think it should be
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Workshop Q&A Previous Table of Cont
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Name Brand Versus Generic PCs The c
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static electricity that may have bu
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SIMMs and DIMMs There are two kinds
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This is called looping back, becaus
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Windows Previous Table of Contents
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Figure 8.4 The NT Task Manager’s
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UNIX Previous Table of Contents Nex
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Probably the most important thing t
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Hour 9 Ethernet Basics Previous Tab
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which translates into lots of colli
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it currently requires fiber-optic c
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designation is simply an industry-s
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Down, Down, Down Previous Table of
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A Collisions cause other errors, su
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Follow the Rules: Share and Enjoy!
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Previous Table of Contents Next Err
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Token Analyzers Finding a NAUN is r
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Token-Ring does not have any hard-a
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Down Town Previous Table of Content
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C. 1, 16 D. 4, 16 Answers to Quiz Q
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Going Native Although Windows allow
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Eminent Domain Previous Table of Co
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machine with the username Administr
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protocol. They therefore relied on
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Previous Table of Contents Next Fol
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Most of the time, you’ll not want
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allows you to manage them and check
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Binding Previous Table of Contents
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Figure 11.6 Showing bindings for al
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Informational Commands Previous Tab
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Figure 11.8 A monitor session. We k
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case you need them. 2. What does SM
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a great example of client/server. W
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Previous Table of Contents Next Alt
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The first number is the process ID
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tcp 0 0 frotz.frob.com.telnet 200.1
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Name Game Previous Table of Content
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The next thing you need to find out
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A UNIX security and file permission
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the amount of time used or data sen
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NLMs In addition to accepting comma
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NLM Party Previous Table of Content
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Again, make sure you are running th
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Big Monitor Is Watching Previous Ta
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Then, eureka! During one session of
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Protocol Problems Previous Table of
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Figure 13.10 UNICON will configure
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Summary Previous Table of Contents
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7. The TCP/IP protocol and basic se
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ivory-tower stuff, but some of it i
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Configuring in Comfort Previous Tab
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Router 1 in Figure 14.3 is shown in
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to that network. Instead, the next
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Route in Peace: Routing Protocols P
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get to a network segment that until
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Figure 14.4 How two stations talk v
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Tree Trunks Previous Table of Conte
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garbage characters like these on a
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A. Add Router 99 to Router 88’s r
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Let’s lay out some definitions he
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Packet-Filtering Routers Previous T
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eceptionist hangs up one line (the
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from the proxy server without causi
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Proxy Trouble Previous Table of Con
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3. The proxy server resolves the na
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Q My vendor says that its firewall
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• Make checklists of tasks that m
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Joe User Previous Table of Contents
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groups | grep -q -w network && { ec
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If you’re going to add or replace
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Policies Previous Table of Contents
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in this hour—will pay off as you
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Q Which duplication software is rig
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Hour 17 Where Do I Start? Previous
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As optimistic as we’d all like to
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• PCAnywhere • ReachOut • Rem
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IPX/SPX Previous Table of Contents
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Q What happens if I ping the loopba
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correlations? A. netstat -a B. trac
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equire that the application files t
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The File and Print Blues Previous T
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With five potential points of failu
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In some cases, a slight difference
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Application Celebration Previous Ta
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Proto Local Address Foreign Address
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printer 515 Line Printer Daemon (ne
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Connected to 167.195.160.6. Escape
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Workshop Q&A Q What in the blazes i
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3. A 4. B 5. False 6. B 7. True 8.
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Intranet = Internal The word intran
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Internet Identification Previous Ta
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If an outside machine is “on the
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Here I Ping Again Previous Table of
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Figure 19.6 DNS zones, like the fol
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[rs.internic.net] Registrant: John
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For example, I ran an NFS server on
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• SMTP—Simple Mail Transfer Pro
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Dialout DNS Previous Table of Conte
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3. What does DMZ stand for? A. DNS
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• It’s a way to avoid a Dilbert
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Socks Stuff Previous Table of Conte
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Figure 20.2 The AOL Instant Messeng
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RealPlayer Previous Table of Conten
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external client for proxy support,
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Typical Operation Previous Table of
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scantily, and still others are not
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Not every kind of filter is availab
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important. Your relative or interpa
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Application Antics Previous Table o
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Broken Ring Previous Table of Conte
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creating a segment between the swit
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Q Where can I get an Ethernet mini-
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Figure 22.1 The MG-Soft MIB browser
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the probe has picked up what’s go
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Previous Table of Contents Next Her
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information without the overhead th
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A. Broadcast B. Baseline C. Brag D.
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• Application efficiency • Serv
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Page 361 and 362: Q About that latency analysis metho
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Page 365 and 366: Router Configuration Previous Table
Page 367 and 368: For the second option, you’ll hav
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Page 371 and 372: are in an unknown location) to conn
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Page 375 and 376: C. SYS:SYSTEM\AUTOEXEC.BAT D. SYS:P
Page 377 and 378: active hub An active hub is one tha
Page 379 and 380: A TCP-based authentication service
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Page 385 and 386: See Internet Group Management Proto
Page 387 and 388: A device that converts (modulates)
Page 389 and 390: providers. Point-to-Point Tunneling
Page 391 and 392: security audit An examination (ofte
Page 393 and 394: An essential part of a network inte
Page 395 and 396: Index Symbols A 100 Megabit Etherne
Page 397 and 398: C new product, 45-46 burned-in addr
Page 399 and 400: DLC (Data Link Control), 17 DMZ (de
Page 401: F fat finger factor, 42-43, 46 fata
Page 405 and 406: M filters, 347-352 LANDecoder, 347
Page 407 and 408: NetBIOS (Network Basic Input/Output
Page 409 and 410: network card. See NIC Network Contr
Page 411 and 412: power supply check, 66 troubleshoot
Page 413 and 414: Q-R qualitative problems, 58 quanti
Page 415 and 416: names, 393-394 NetWare, 202 paging
Page 417 and 418: T dumb terminal mode, 211, 224 full
Page 419 and 420: isolating soft errors, 135-136 LANa
Page 421 and 422: U standardizing configuration, 245
Page 423 and 424: V W upstream, 134 Usenet newsgroups
Page 425 and 426: autodetection problems, 159 broadca
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