70-270: MCSE Guide to Microsoft Windows XP Professional Chapter 8: Internetworking with Remote Access - PowerPoint PPT Presentation

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70-270: MCSE Guide to Microsoft Windows XP Professional Chapter 8: Internetworking with Remote Access. Objectives. Understand remote access under Windows XP Configure various remote access connection types for a Windows XP Professional system Install remote access hardware

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70-270: MCSE Guide to Microsoft Windows XP Professional Chapter 8: Internetworking with Remote Access

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70 270 mcse guide to microsoft windows xp professional chapter 8 internetworking with remote access l.jpg

70-270: MCSE Guide to Microsoft Windows XP ProfessionalChapter 8: Internetworking with Remote Access


Objectives l.jpg

Objectives

  • Understand remote access under Windows XP

  • Configure various remote access connection types for a Windows XP Professional system

  • Install remote access hardware

  • Understand remote access security

  • Understand the Internet Options applet

70-270: MCSE Guide to Microsoft Windows XP Professional


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Objectives

  • Implement Internet Connection Sharing and the Internet Connection Firewall

  • Understand the native Internet tools and utilities

  • Troubleshoot remote access problems

70-270: MCSE Guide to Microsoft Windows XP Professional


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Remote Access

  • Components:

    • Clients

    • Protocols

    • WAN connectivity

    • Security

    • Server

    • LAN protocols

70-270: MCSE Guide to Microsoft Windows XP Professional


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Features Of Remote Access in Windows XP

  • Standard component

  • No manual service installation required

70-270: MCSE Guide to Microsoft Windows XP Professional


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PPP Multilink

  • Increase overall throughput

  • Combine bandwidth of two or more physical communication links

  • Based on Internet Engineering Task Force (IETF) standard RFC 1717

70-270: MCSE Guide to Microsoft Windows XP Professional


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VPN Protocols

  • Point-to-Point Tunneling Protocol (PPTP)

    • Supports multiprotocol VPNs

    • Encrypted and secure

  • Layer Two Tunneling Protocol (L2TP)

    • Developed by Cisco Systems

    • Encapsulates PPP frames for transport over various networks

    • Used in combination with IPSec

70-270: MCSE Guide to Microsoft Windows XP Professional


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Restartable File Copy

  • Automatically retransmits incomplete file transfers

  • Faster transmission of large files over lower-quality connections

  • Reduced cost from avoiding retransmission of the whole file

  • Reduced frustration from interrupted transfers

70-270: MCSE Guide to Microsoft Windows XP Professional


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Idle Disconnect

  • Shuts off remote access connection after specified period of inactivity

  • Reduces the costs of remote access

  • Frees up inactive remote access ports

70-270: MCSE Guide to Microsoft Windows XP Professional


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Autodial and Logon Dial

  • Automatically connect and retrieve files and applications stored on remote system

70-270: MCSE Guide to Microsoft Windows XP Professional


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Client and Server Enhancements

  • Number of client and server components

  • Allow third-party vendors to develop remote access and dial-up networking applications

70-270: MCSE Guide to Microsoft Windows XP Professional


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Look and Feel

  • Undergone changes since Windows 2000

  • Significantly different from similar utilities in Windows NT and Windows 95/98

  • Integrated with networking components

  • Network Connections:

    • Multipurpose management interface

    • Both standard LAN networking links and remote access links are established and configured

70-270: MCSE Guide to Microsoft Windows XP Professional


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Callback Security

  • Control access to the system from specified phone numbers

  • Calls may originate only from known phone number locations

  • Remote access client can set the phone number dynamically

70-270: MCSE Guide to Microsoft Windows XP Professional


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WAN Connectivity

  • Create WAN by connecting existing LANs

  • Remote access over:

    • Telephone

    • ISDN

    • Cable modems

    • Campus networks

    • Other communication lines

  • Cost-effective solution if you have minimal to moderate network traffic between sites

70-270: MCSE Guide to Microsoft Windows XP Professional


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Internet Network Access Protocols

  • Supports all standard protocols for remote Internet access

  • Remote access protocol dependent on the client and server OS and LAN protocols

70-270: MCSE Guide to Microsoft Windows XP Professional


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PPP

  • Current standard for remote access

  • Microsoft recommends using PPP

  • Flexible

  • Industry standard

70-270: MCSE Guide to Microsoft Windows XP Professional


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PPTP

  • Allows you to establish a secure remote access pipeline over the Internet

  • “Tunnel” IPX or TCP/IP traffic inside PPP packets

  • Significant features:

    • Low transmission costs

    • Hardware costs

    • Administrative overhead

    • Improved security

70-270: MCSE Guide to Microsoft Windows XP Professional


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PPP-MP

  • Combines two or more physical remote access links into one logical bundle with greater bandwidth

  • Can combine analog and digital links

  • All connections to be aggregated must be of the same technology type

70-270: MCSE Guide to Microsoft Windows XP Professional


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SLIP

  • One of the first protocols developed specifically for TCP/IP support over dial-up connections

  • Included in Windows XP for backward-compatibility

  • Does not support Dynamic Host Configuration Protocol (DHCP)

70-270: MCSE Guide to Microsoft Windows XP Professional


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IPSec

  • Security measure added to TCP/IP

  • Negotiates secure encrypted communications link

  • Uses public and private encryption key management

  • Can be used over RAS/WAN link

  • Can be used within LAN

70-270: MCSE Guide to Microsoft Windows XP Professional


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Telephony Features

  • TAPI

    • Remote access Telephony API

    • Supplies uniform way of accessing:

      • Fax

      • Data

      • Voice

    • Part of Windows Open System Architecture (WOSA)

70-270: MCSE Guide to Microsoft Windows XP Professional


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Remote Access Configuration

  • Integrated default component of Windows XP

  • Configured and managed from Network Connections window

70-270: MCSE Guide to Microsoft Windows XP Professional


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Network Connections Window

70-270: MCSE Guide to Microsoft Windows XP Professional


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Installing Remote Access Hardware

  • Hardware must be installed before remote connection established

  • Windows XP inspects hardware and attempts to identify any new devices

  • Windows XP attempts to locate and install drivers for new device

70-270: MCSE Guide to Microsoft Windows XP Professional


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Phone and Modem Options

  • Primary Control Panel applet for managing remote access devices and operations

  • Used to control:

    • Dialing rules

    • Configure remote access devices

    • Configure telephony driver properties

70-270: MCSE Guide to Microsoft Windows XP Professional


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Connecting to the Internet

  • Connect to the Internet Wizard:

    • Choose from a list of Internet service providers (ISPs)

    • Set up my connection manually

    • Use the CD I got from an ISP

70-270: MCSE Guide to Microsoft Windows XP Professional


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Connection Status Dialog Box

70-270: MCSE Guide to Microsoft Windows XP Professional


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Internet Connection Sharing

  • Used to share single network connection with small group of networked computers

  • Enabled on Advanced tab of connection object’s Properties dialog box

  • Incorporates:

    • Network Address Translation (NAT) function

    • Dynamic Host Configuration Protocol (DHCP) address allocator

    • Domain Name System (DNS) proxy

70-270: MCSE Guide to Microsoft Windows XP Professional


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Internet Connection Firewall

  • Security measure for protecting network connections from unwanted traffic

  • Can set restrictions on traffic in and out of network to an external network or the Internet

  • Much-needed feature for systems that employ shared broadband connections

  • Stateful firewall

  • Blocks most incoming traffic by default

70-270: MCSE Guide to Microsoft Windows XP Professional


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Connecting to the Network at My Workplace

  • Virtual Private Networking (VPN)

    • Trend in mobile computing

    • Employs the Internet as long-distance carrier to enable distant, secure LAN connections

  • Windows XP VPN:

    • Encrypts all traffic

    • Setup with New Connection Wizard

70-270: MCSE Guide to Microsoft Windows XP Professional


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Setting Up an Advanced Connection

  • Used to:

    • Establish direct connection between two systems

      • Transfer large amount of data with no network connection

      • Use serialor parallel cable

    • Configure system to answer inbound dial-up calls

      • Can act as remote access server for single incoming connection

      • Only for special-purpose applications

70-270: MCSE Guide to Microsoft Windows XP Professional


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Alternate IP Configuration

  • Available whenever networking connection object uses DHCP

  • Preconfigure alternate default IP configuration if DHCP fails

  • Prevents APIPA address from being assigned

70-270: MCSE Guide to Microsoft Windows XP Professional


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Remote Access Security

  • Built on Windows XP local and network security

  • Dial-up connection objects

    • Authentication and encryption security options

  • VPN

    • Used to secure remote access

70-270: MCSE Guide to Microsoft Windows XP Professional


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Certificates

  • Provide proof of identity for network and Internet communications

  • Allow systems to trust unknown online parties for the purposes of:

    • Exchanging information

    • Exchanging Data

    • Performing e-commerce

  • Product of cryptographic mechanism known as public key infrastructure (PKI)

70-270: MCSE Guide to Microsoft Windows XP Professional


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Certificates (continued)

  • Certificate Authority (CA):

    • Responsible for:

      • Creating

      • Issuing

      • Managing

      • Revoking certificates

    • Can be server computer system within organization’s network or service offered by independent third-party organization

70-270: MCSE Guide to Microsoft Windows XP Professional


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Internet Options Applet

  • Used to define settings for Internet Explorer and general Internet access

  • Four Web zones:

    • Internet

    • Local intranet

    • Trusted sites

    • Restricted sites

70-270: MCSE Guide to Microsoft Windows XP Professional


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Internet Options Applet (continued)

  • Security restrictions:

    • Low

    • Medium Low

    • Medium

    • High

70-270: MCSE Guide to Microsoft Windows XP Professional


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Windows XP and the Internet

  • Tools to help access the Internet:

    • Internet Explorer

    • Outlook Express

    • FTP client,

    • Telnet client

    • Internet Information Server (IIS)

70-270: MCSE Guide to Microsoft Windows XP Professional


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Internet Explorer

  • Version 6.0 is included

  • State-of-the-art Web browser

  • Tightly integrated with other Windows applications

  • Wide range of security related configuration options

  • Can be used as FTP client.

70-270: MCSE Guide to Microsoft Windows XP Professional


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Outlook Express

  • Popular e-mail client utility

  • Part of Microsoft Office

  • Outlook Express included in Windows XP

  • Used to read and write e-mail

  • Used to file and sort messages

  • Contact management tool

70-270: MCSE Guide to Microsoft Windows XP Professional


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FTP Client

  • Command-line implementation of FTP client included in Windows XP

  • Numerous freeware and shareware GUI implementations:

    • More user-friendly

70-270: MCSE Guide to Microsoft Windows XP Professional


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Telnet Client

  • Simple tool provided in Windows XP

  • Attempts to establish Telnet session with remote system based on domain name or IP address

70-270: MCSE Guide to Microsoft Windows XP Professional


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Internet Information Server

  • Reduced functionality version of Internet Information Server (IIS) included with Windows XP

  • Allows system to host Web and FTP services

  • Limited to 10 simultaneous connections

  • Not designed or intended for public Web/FTP site hosting

70-270: MCSE Guide to Microsoft Windows XP Professional


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Order Prints Online

  • Feature of the My Pictures folder

  • Starts the Online Print Ordering Wizard

  • Requires that Internet access be available

70-270: MCSE Guide to Microsoft Windows XP Professional


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Client Vs. Server-based Remote Access

  • Limited to a single incoming dial-up connection

  • Can support only 10 simultaneous network connections

  • Can share an Internet link with a workgroup

70-270: MCSE Guide to Microsoft Windows XP Professional


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Remote Access Troubleshooting

  • Problems can be fairly elusive

  • Check:

    • Physical connections (phone lines, serial cables, etc.)

    • Power to external devices

    • Properly installed and updated drivers

    • Properly configured settings

    • Correct authentication credentials

    • Similar encryption or security requirements

    • Proper protocol requirements and settings

70-270: MCSE Guide to Microsoft Windows XP Professional


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Remote Access Troubleshooting (continued)

  • Log files:

    • File containing all communications made between the OS and modem device during connection establishment

    • PPP.LOG

    • System log

70-270: MCSE Guide to Microsoft Windows XP Professional


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Summary

  • Windows XP works with various internetworking and remote access protocols

  • Windows XP provides security and encryption features for remote access

  • Internet Connection Sharing can be used to share a single ISP link with a small network

  • Certificates are used to prove identity and support secured online transactions

70-270: MCSE Guide to Microsoft Windows XP Professional


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