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Novell calls the latter way “running a program in a different domain,” but whatever it’s called, it’s a lot more reliable, and it’s automatic in the latest releases. I don’t know of anyone who will complain because the server runs two percent slower due to its increased reliability. Previous Table of Contents Next
Big Monitor Is Watching Previous Table of Contents Next As much as I love the Microsoft System Monitor, I have room in my heart for Novell Monitor as well. Even though it’s text based (it’s not graphical at all), Novell Monitor is rather complete and can be a troubleshooter’s best friend. You simply type LOAD MONITOR at the console prompt, use the menus, and the world is at your fingertips. Just about every resource on a Novell server is tracked by the Monitor, and this is a good thing. Here are some really good things the Monitor monitors: • Server connections and session statistics • File locks (who’s using the file?) • Hardware resources (CPU, memory) • Processes (subprograms) Suppose a user reports that she can’t get into the server. Once you’ve established that others are working with the server, you might try to get in yourself and discover you cannot. A quick check of the monitor screen reveals how many connections are in use—you might see that you’re out of server connections. Each user who is logged into the server uses one server license. If you run out of connections, you’ll most likely have to purchase more licenses from Novell. When the server runs out of disk space, you can walk through Monitor’s user connection list and see who has been using a lot of disk space lately; the results look something like those shown in Figure 13.6. In this case, you can see that the evil user JFeldman has written 1,128KB (or 1.12MB) in the one minute he’s been logged in. He might not be your culprit, though—1MB usually doesn’t overflow a server volume. You should look through the other connections for something more like 5–10MB or more. Also notice the network address: JFeldman’s logged in from network 1D, MAC address 00-00-f6-88-d9- 4b, and socket 404C. Once you find the offending user, you get a quick confession. For other ways of finding disk space
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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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Previous Table of Contents Next Par
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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
Page 141 and 142: Down Town Previous Table of Content
Page 143 and 144: C. 1, 16 D. 4, 16 Answers to Quiz Q
Page 145 and 146: Going Native Although Windows allow
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Page 149 and 150: machine with the username Administr
Page 151 and 152: protocol. They therefore relied on
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Page 155 and 156: Most of the time, you’ll not want
Page 157 and 158: allows you to manage them and check
Page 159 and 160: Binding Previous Table of Contents
Page 161 and 162: Figure 11.6 Showing bindings for al
Page 163 and 164: Informational Commands Previous Tab
Page 165 and 166: Figure 11.8 A monitor session. We k
Page 167 and 168: case you need them. 2. What does SM
Page 169 and 170: a great example of client/server. W
Page 171 and 172: Previous Table of Contents Next Alt
Page 173 and 174: The first number is the process ID
Page 175 and 176: tcp 0 0 frotz.frob.com.telnet 200.1
Page 177 and 178: Name Game Previous Table of Content
Page 179 and 180: The next thing you need to find out
Page 181 and 182: A UNIX security and file permission
Page 183 and 184: Previous Table of Contents Next Hou
Page 185 and 186: the amount of time used or data sen
Page 187 and 188: NLMs In addition to accepting comma
Page 189 and 190: NLM Party Previous Table of Content
Page 191: Again, make sure you are running th
Page 195 and 196: Then, eureka! During one session of
Page 197 and 198: Protocol Problems Previous Table of
Page 199 and 200: Figure 13.10 UNICON will configure
Page 201 and 202: Summary Previous Table of Contents
Page 203 and 204: 7. The TCP/IP protocol and basic se
Page 205 and 206: ivory-tower stuff, but some of it i
Page 207 and 208: Configuring in Comfort Previous Tab
Page 209 and 210: Router 1 in Figure 14.3 is shown in
Page 211 and 212: to that network. Instead, the next
Page 213 and 214: Route in Peace: Routing Protocols P
Page 215 and 216: get to a network segment that until
Page 217 and 218: Figure 14.4 How two stations talk v
Page 219 and 220: Tree Trunks Previous Table of Conte
Page 221 and 222: garbage characters like these on a
Page 223 and 224: A. Add Router 99 to Router 88’s r
Page 225 and 226: Let’s lay out some definitions he
Page 227 and 228: Packet-Filtering Routers Previous T
Page 229 and 230: eceptionist hangs up one line (the
Page 231 and 232: from the proxy server without causi
Page 233 and 234: Proxy Trouble Previous Table of Con
Page 235 and 236: 3. The proxy server resolves the na
Page 237 and 238: Q My vendor says that its firewall
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Page 241 and 242: • 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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Application and Protocol Efficiency
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and so on—is to measure. Everythi
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it a point to say, “Would you sho
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Here are the two types of performan
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Network Statistics Previous Table o
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Q About that latency analysis metho
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Router Configuration Previous Table
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For the second option, you’ll hav
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Automatic for the People Previous T
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are in an unknown location) to conn
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Previous Table of Contents Next The
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C. SYS:SYSTEM\AUTOEXEC.BAT D. SYS:P
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active hub An active hub is one tha
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A TCP-based authentication service
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applications and protocols are base
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An extremely fast network cable tha
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See Internet Group Management Proto
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A device that converts (modulates)
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providers. Point-to-Point Tunneling
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security audit An examination (ofte
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An essential part of a network inte
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Index Symbols A 100 Megabit Etherne
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C new product, 45-46 burned-in addr
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DLC (Data Link Control), 17 DMZ (de
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F fat finger factor, 42-43, 46 fata
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ICQ, 335-336 IMAP (Internet Mail Ap
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M filters, 347-352 LANDecoder, 347
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NetBIOS (Network Basic Input/Output
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network card. See NIC Network Contr
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power supply check, 66 troubleshoot
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Q-R qualitative problems, 58 quanti
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names, 393-394 NetWare, 202 paging
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T dumb terminal mode, 211, 224 full
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isolating soft errors, 135-136 LANa
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U standardizing configuration, 245
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V W upstream, 134 Usenet newsgroups
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autodetection problems, 159 broadca
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