Chapter 8: Configuring Network Connectivity

Installing Network Adapters

• Network adapter cards connect a computer to a network.

• Installation– Plug and Play adapters will install

automatically– Non-Plug and Play adapters must

be installed with the Add Hardware Wizard in Control Panel

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Configuring a Network Adapter

• Device Manager• Network adapter’s Properties

dialog box– General tab– Advanced tab– Driver tab– Details tab– Resources tab– Power Management tab

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Troubleshooting Network Adapters

• Common causes of network adapter problems– Network adapter not on the HCL– Outdated network card driver– Network adapter card not recognized

by Windows Vista– Hardware not working properly– Improperly configured network

protocols– Improperly configured network card– Bad cable– Bad network connection device (hub,

switch, router)4/19

Network and Sharing Center

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Network Locations

• Public– Used for unsecure,

public networks– Does not allow

discovery between networked computers

• Private– Used for secure,

private networks– Allows discovery

between networked computers

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Sharing and Discovery

• Network Discovery• File Sharing

– Three folders shared by default:• Public• Users• Printers

• Public Folder Sharing• Printer Sharing• Password Protected Sharing• Media Sharing

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Tasks Pane

• View Computers and Devices

• Connect to a Network

• Manage Wireless Networks

• Set Up a Connection or Network

• Manage Network Connections

• Diagnose and Repair

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Remote Access

• Two methods of remote access:– Dial-in connection to a Remote

Access Service (RAS) Server– Virtual Private Network (VPN)

Connection

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Remote Access over VPN

• Tunneling Protocols– Point-to-Point Tunneling Protocol (PPTP)– Layer Two Tunneling Protocol (L2TP)

• Authentication Methods– Password Authentication Protocol (PAP)– Challenge Handshake Authentication Protocol

(CHAP)– Microsoft CHAP v2 (MS-CHAPv2)– Extensible Authentication Protocol (EAP)

• Encryption Options– Microsoft Point-to-Point Encryption (MPPE)– Internet Protocol Security (IPSec)

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Connecting to a Wireless Network

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Configuring Security for a Wireless Network

• Disable SSID broadcast

• Create MAC address filter

• Enable Encryption– Wired Equivalent Privacy (WEP)– Wi-Fi Protected Access (WPA)– WPA version 2 (WPA2)

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Overview of TCP/IP

• Required for Internet connectivity• Installed by default in Vista• Main protocols:

– Transmission Control Protocol (TCP)– Internet Protocol (IP)– User Datagram Protocol (UDP)– Address Resolution Protocol (ARP)– Internet Control Message Protocol

(ICMP)– Internet Group Management Protocol

(IGMP)

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Basics of IPv4 Addressing

• 32-bit address• Uniquely identifies your computer on the

network• Written in dotted decimal notation

(192.168.1.144)• Subnet mask

– Used to specify the network portion and host portion of an address

• Address classes– Class A– Class B– Class C

• Default Gateway

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Methods of IP Address Assignment

• Dynamic Host Configuration Protocol (DHCP)– Assigns IP addressing information

to computers

• Automatic Private IP Addressing (APIPA)

• Static Address Configuration

• Alternate Configuration

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Domain Name System (DNS) Servers

• Used to resolve domain names, such as www.sybex.com, to IP addresses.

• DNS servers maintain a distributed database of all the registered domains and their IP addresses.

• HOSTS files are used if DNS servers are not available.

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Windows Internet Name Service (WINS) Servers

• Used to resolve NetBIOS names to IP addresses.

• NetBIOS names are primarily used for backwards compatibility with Windows NT 4.

• LMHOSTS files are used if WINS servers are not available.

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IPv6 Addressing

• 128-bit addresses– Allows for a much larger address

space than IPv4

• Can coexist with IPv4• Written in hexadecimal format

– Equivalent examples:• 0123:0456:0789:0000:0000:00AB:00

CD:00EF• 123:456:789:0:0:AB:CD:EF• 123:456:789::AB:CD:EF

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Testing IP Configuration

• ipconfig– Displays your IP configuration– Switches

• ipconfig /all• ipconfig /release• ipconfig /renew

• ping– Tests connectivity between two computers

• nbtstat– Displays NetBIOS over TCP/IP connection

protocol statistics

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