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Head First Networking. A Brain-Friendly Guide - Helion

Head First Networking. A Brain-Friendly Guide
ebook
Autor: Al Anderson, Ryan Benedetti
ISBN: 978-14-493-6814-2
stron: 538, Format: ebook
Data wydania: 2009-05-27
Księgarnia: Helion

Cena książki: 169,15 zł (poprzednio: 196,69 zł)
Oszczędzasz: 14% (-27,54 zł)

Dodaj do koszyka Head First Networking. A Brain-Friendly Guide

Tagi: Budowa sieci | Konfiguracja sieci | Sieci komputerowe

Frustrated with networking books so chock-full of acronyms that your brain goes into sleep mode? Head First Networking's unique, visually rich format provides a task-based approach to computer networking that makes it easy to get your brain engaged. You'll learn the concepts by tying them to on-the-job tasks, blending practice and theory in a way that only Head First can.

With this book, you'll learn skills through a variety of genuine scenarios, from fixing a malfunctioning office network to planning a network for a high-technology haunted house. You'll learn exactly what you need to know, rather than a laundry list of acronyms and diagrams. This book will help you:

  • Master the functionality, protocols, and packets that make up real-world networking
  • Learn networking concepts through examples in the field
  • Tackle tasks such as planning and diagramming networks, running cables, and configuring network devices such as routers and switches
  • Monitor networks for performance and problems, and learn troubleshooting techniques
  • Practice what you've learned with nearly one hundred exercises, questions, sample problems, and projects

Head First's popular format is proven to stimulate learning and retention by engaging you with images, puzzles, stories, and more. Whether you're a network professional with a CCNA/CCNP or a student taking your first college networking course, Head First Networking will help you become a network guru.

Dodaj do koszyka Head First Networking. A Brain-Friendly Guide

 

Osoby które kupowały "Head First Networking. A Brain-Friendly Guide", wybierały także:

  • Cisco CCNA 200-301. Kurs video. Podstawy sieci komputerowych i konfiguracji. Część 1
  • MikroTik. Kurs video. Przygotowanie do egzaminu MTCNA
  • Praktyczne projekty sieciowe
  • Sieci komputerowe. Kurs. Wydanie II
  • Sieci komputerowe. Kurs

Dodaj do koszyka Head First Networking. A Brain-Friendly Guide

Spis treści

Head First Networking. A Brain-Friendly Guide eBook -- spis treści

  • Head First Networking
  • Dedication
  • Advance Praise for Head First Networking
  • Praise for other Head First books
  • Authors of Head First Networking
  • How to Use this Book: Intro
    • Who is this book for?
      • Who should probably back away from this book?
    • We know what youre thinking
    • We know what your brain is thinking
    • Metacognition: thinking about thinking
    • Heres what WE did:
    • Heres what YOU can do to bend your brain into submission
    • Read Me
    • The technical review team
    • Acknowledgments
    • Safari Books Online
  • 1. Fixing Physical Networks: Walking on Wires
    • Coconut Airways has a network problem
      • The booking system network cable is busted
    • How do we fix the cable?
      • But how do we do this?
    • Introducing the CAT-5 cable
    • The CAT-5 cable dissected
      • So why are the pairs twisted?
    • So whats with all the colors?
    • Lets fix the broken CAT-5 cable
    • A closer look at the RJ-45 connector
      • So which wire goes where?
    • So what are the physical steps?
    • You fixed the CAT-5 cable
    • Coconut Airways has more than one network
    • Introducing the coaxial cable
    • Coaxial networks are bus networks
    • So can we fix the cable?
    • The networks still not working
    • So what goes on inside a coaxial cable?
      • But what if theres a break in the conductor?
    • What about connectors and terminators?
    • Use toner-tracer sets to listen to electrons
    • No sound means no electrons
      • So how do we find the continuity break?
    • Youve fixed the coaxial cable
    • Introducing fiber-optic cables
      • Fiber-optics have connectors too
    • The Coconut Airways cables over-bent
      • So whats a fusion splicer?
    • How to fix fiber-optics with a fusion splicer
    • A fiber-optic connector needs fitting too
    • Were nearly ready to fix the connector
    • There are two types of fiber
      • Single mode fiber
      • Multimode fiber
    • Which mode fiber should you use?
    • Lets fit the connector on the fiber-optic
      • So which technique should we use?
    • Coconut Airways is sky high
  • 2. Planning Network Layouts: Networking in the Dark
    • Ghost Watch needs your help!
    • Every good network needs a good plan
    • So how does the device list help us plan a network?
    • How to plan a network layout
    • Lets plan the cabling with a floorplan
    • Ready to plot some network cables?
    • So where have we got to?
    • We need to decide on the cable management hardware
    • Uh oh! The cabling is a mess
    • Ghost Watch needs cable management hardware
    • Things that go bump...
    • Youve really cleaned up that noise and straightened out MOST of the cables!
      • Whats in the closet?
    • Lets start by labeling the cables
    • But there are still lots of cables
      • But what else can we do?
    • So whats a patch panel?
    • Behind the scenes of a patch panel
    • The wires go into a punch down block
    • Roll the cameras!
  • 3. Tools and Troubleshooting: Into the Wire
    • Mighty Gumball won the Super Bowl contract
    • A toner and tracer can check for a signal...
    • ... but cant check for signal quality
    • Introducing the multimeter
      • Use a multimeter to measure resistance
    • So whats resistance?
      • When resistance is low
      • When resistance is high
    • So how well did the multimeter do?
    • An oscilloscope shows voltage changes
    • Voltage is really electrical pressure
      • So how does this help us troubleshoot problems?
    • Where does noise on network cables come from?
    • So how well did the oscilloscope perform for Mighty Gumball?
    • A logical analyzer uses voltage too
    • When is a logical analyzer useful?
    • So which tool is best?
    • The Mighty Gumball bonus went to Jill
    • A LAN analyzer combines the functions of all the other tools
    • A LAN analyzer understands the network traffic in the signal
    • So which tool is best?
    • The Mighty Gumball problems are fixed!
  • 4. Packet Analysis: Youve Been Framed
    • Whats the secret message?
      • So how do we extract a message from a signal?
    • Network cards handle encoding
      • So how does the NIC encode the data?
    • To get the message, reverse the encoding
      • So how do we decode the signal?
    • The Ethernet standard tells hardware how to encode the data
    • A quick guide to binary
      • So how do we convert a binary to decimal?
    • Computers read numbers, humans read letters
      • But isnt there an easier way?
    • Hexadecimal to the rescue
      • So how do we convert a hexadecimal to decimal?
    • We can convert to ASCII using hex
    • Back at the spy agency...
    • Protocols define the structure of a message
    • Network frames have lots of layers
    • Your friendly packet field guide
      • UDP Packet - Protocol Type 17
      • ICMP Packet - Protocol Type 1
      • TCP Packet - Protocol Type 6
    • So can we decode the secret message?
    • Weve got all the right packets... but not necessarily in the right order
    • The packet tells you the correct order
  • 5. Network Devices and Traffic: How Smart is Your Network?
    • Youve decoded the secret message...
      • ...but how do we know who sent it?
    • The packet information tells us where the packet came from
    • So whos the mole?
    • Theres more to networks than computers
    • Hubs dont change the MAC address
      • So which device sent the packet to the hub?
    • A hub sends signals, and sends them everywhere
      • Hubs think in terms of electricity
    • So what passed the signal to the hub?
    • A switch sends frames, and only sends them where they need to go
      • Switches think in terms of frames
    • Switches store MAC addresses in a lookup table to keep the frames flowing smoothly
    • The switch has the information...
    • We can use software to monitor packets
    • Lets hook Wireshark up to the switch
    • Wireshark gives us traffic information
    • Routers have MAC addresses too
    • Were closing in!
    • Youve found the mole!
  • 6. Connecting Networks with Routers: Bringing Things Together
    • Networking Walking on the moon
    • We need to connect two networks together
    • The lights on, but nobodys home
      • What do you think the flashing LEDs have to do with traffic on the network?
    • Lets see what traffic is on our network!
    • MAC address versus IP address
    • IP addresses give our networks a sense of location, and network nodes a sense of belonging to that location
    • We retrieve IP addresses using the MAC address and the Address Resolution Protocol (ARP)
    • So whats the problem with the Moonbase?
    • How do we get network traffic to move between networks?
    • How the router moves data across networks
    • Back to the Moonbase problem
    • The secret of IP numbers is...
    • Routers connect networks by doing the math...
    • Back at the Moonbase...
    • Are you ready to program the router?
    • You just created this router config file!
    • Let the router tell us whats wrong...
  • 7. Routing Protocols: Its a Matter of Protocol
    • Houston, we have a problem...
    • Routing tables tell routers where to send packets
      • We can see routes in the table using the show command
    • Each line represents a different route
    • So how do we enter routes?
    • Routes help routers figure out where to send network traffic
    • So are the moonbases now connected?
    • Back on the moon...
      • Moonbase 1 still has problems
    • So how do we troubleshoot bad routes?
      • We can start with the ping command
      • So how does the ping command work?
    • The traceroute command is useful too
    • So whats the problem with the network connection?
    • The network address changes keep on coming...
    • Use RIP to get routes to update themselves
      • So what does this mean for Moonbase 1?
    • So how do we set up RIP?
    • But theres still a problem...
    • There are too many hops
    • The routing protocol zoo
    • So how do we setup EIGRP?
    • We have lift off!
  • 8. The Domain Name System: Names to Numbers
    • The Head First Health Club needs a website
    • Hello, my domain name is...
      • So how do we get a domain name?
    • Lets go buy a domain name
    • Uh-oh! Were in trouble
      • And shes not the only one
    • Introducing the DNS
    • The DNS relies on name servers
    • How the DNS sees your domain
    • So how does this affect the Health Club?
    • First install a DNS name server...
    • ...then configure the name server
    • The anatomy of a DNS zone file
    • Heres what the DNS zone file tells us about the Health Club servers
    • The Health Club cant send emails
    • So whats the problem?
    • Email servers use RDNS to fight SPAM
    • Check your sources with reverse DNS
    • The dig command can do a reverse DNS lookup
    • Your name server has another important zone file...
    • The emails are working!
  • 9. Monitoring and Troubleshooting: Listen to Your Networks Troubles
    • Pajama Death are back on tour
      • So heres your challenge...
    • So where would you start troubleshooting a misfiring network?
    • Start troubleshooting your network problems by checking in with your network devices
    • Troubleshoot network connectivity with the ping command
      • If you can ping, you get timings
      • But what if you cant ping?
    • If the ping fails, check the cables
    • Get started with the show interface command
      • The interfaces network statistics are a gold mine of troubleshooting information
    • The ticket networks still not fixed
    • SNMP to the rescue!
    • SNMP is a network admininistrators communication tool
    • How to configure SNMP on a Cisco device
    • One hour to go...
    • Get devices to send you their problems
    • How to configure syslogd on a Cisco device
    • How do you tell whats in the logs?
      • syslogd lets you fix problems before theyre problems
    • Too much information can be just as bad as not enough
      • What you need is relevant information
    • How do you know which events are important?
    • Pajama Deaths a sell-out!
  • 10. Wireless Networking: Working Without Wires
    • Your new gig at Starbuzz Coffee
      • Starbuzz Coffee needs a wireless hotspot
    • Wireless access points create networks using radio waves
    • Lets fit the wireless access point
    • What about the network configuration?
    • So whats DHCP?
      • DHCP allocates IP addresses
    • First make sure the client has DHCP turned on...
    • Second, make the wireless access point a DHCP server...
    • ...and then specify an acceptable range of IP addresses
    • So has setting up DHCP solved the problem?
    • This time its personal
    • Weve run out of IP addresses
    • NAT works by reallocating IP addresses
    • So how do we configure NAT?
    • So has this fixed the problem?
    • Theres more than one wireless protocol
      • Most newer access point support multiple protocols
      • So is the Starbuzz wireless access point sorted?
    • The central Starbuzz server needs to access the cash register
    • Port mapping to the rescue!
      • So port mapping is a bit like NAT in reverse
    • Lets set up port mapping on the Starbuzz access point
    • The wireless access point is a success!
  • 11. Network Security: Get Defensive
    • The bad guys are everywhere
      • The evil impersonator
      • The evil attacker
    • And its not just the NETWORK that gets hurt...
      • The evil eavesdropper
    • The big four in network security
    • Defend your network against MAC address spoofing
    • So how do we defend against MAC address spoofing?
    • Defend your network against ARP poisoning attacks
    • So what can we do about ARP poisoning attacks?
    • Its all about the access, baby!
      • If an attacker can get past your router, then hes on your network!
    • Set up your routers Access Control Lists to keep attackers out
    • So how do we configure the Access Control List?
    • Firewalls filter packets between networks
    • Packet-filtering rules!
    • Master the static packet filter
    • Get smart with stateful packet-filters
    • Humans are the weakest link in your security chain
    • So how do social engineers operate?
    • Smash social engineering with a clear and concise security policy
    • Youve hardened your network
  • 12. Designing Networks: You Gotta Have a Plan!
    • Now you have to plan a network from scratch!
    • You have to know what the needs are before you can plan
    • So youve developed your questions, now what?
    • Look at your action plan
    • So you have a physical layout, whats next?
    • Blueprints show everything in a buildings design
    • You may have to modify your network design based on what you see in the blueprints!
    • So youve got your physical network layout, whats next?
      • You have got several options to segment this into two networks
    • Finally, you need an implementation plan
    • Leaving town...
    • Its been great having you here in Networkville!
  • A. Leftovers: The Top Ten Things (we didnt cover)
    • #1 Network topologies
      • Star topology
      • Bus topology
      • Token Ring topology
    • #2 Installing Wireshark
      • Windows Install
      • Mac OS X Install
      • Linux Install (Ubuntu)
    • #3 How to get to the console or terminal
      • Windows
      • Linux
      • Mac OS X
    • #4 The TCP Stack
    • #5 VLANS
    • #6 Cisco IOS Simulators
    • #7 BGP
    • #8 VPN
    • #9 Intrusion Detection Systems
    • #10 Cisco Certification
  • B. Ascii Tables: Looking Things Up
    • ASCII tables 0-31
    • ASCII code tables 32-63
    • ASCII code tables 64-95
    • ASCII code tables 96-127
  • C. Installing Bind: Getting a Server to talk DNS
    • #1 Installing BIND on Windows (XP, 2000, Vista)
    • #2 Installing BIND Mac OS X Server
    • #3 Installing BIND Mac OS X Client & Linux
  • Index
  • About the Authors
  • Copyright

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