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Web Server Administration . Chapter 9 Extending the Web Environment. Overview. Understand File Transfer Protocol (FTP) services Install and configure an FTP server in Windows Understand News servers Configure remote access to a server Understand streaming media servers

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Web server administration l.jpg

Web Server Administration

Chapter 9

Extending the Web Environment


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Overview

  • Understand File Transfer Protocol (FTP) services

  • Install and configure an FTP server in Windows

  • Understand News servers

  • Configure remote access to a server

  • Understand streaming media servers

  • Understand e-commerce software


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Understanding FTP Services

  • FTP is used to transfer files from a server to a client (download) and transfer files from a client to a server (upload)

  • FTP client is the browser

    • Also command-line and GUI clients

  • FTP servers can operate as anonymous servers or they can require a valid logon

    • FTP servers are not secure; user names and passwords are not sent encrypted


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Understanding FTP Services

  • The client connects to port 21 (control port)

  • Port 20 (data port) is used to tell the client which unprivileged port to use for data transfer

  • The above describes passive mode FTP, the most common type





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Install and Configure Windows FTP Server

  • Windows component

    • Part of IIS

  • Configured through Internet Information Services (IIS) Manager


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Configure FTP Messages

  • Banner appears when client connects

  • Welcome appears when logged on

  • Exit appears when client exits from server

  • Maximum connections appears when limit is reached and client cannot connect


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Understanding News Servers

  • News servers allow threaded discussions

  • You post messages in a newsgroup

  • A newsgroup focuses on a single topic

  • There are more than 40,000 public newsgroups

  • There are hundreds of gigabytes of information generated per day

  • News servers can be set up for use within an organization


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Telnet and Windows

  • Telnet is not popular in Windows because telnet is text-based and Windows relies on a GUI

    • However, there are many command-line utilities that can be used, especially in Windows Server 2003

  • Before Windows, Microsoft networking depended on a single command net with many options

  • cacls can be used to alter permissions

  • netsh starts a networking shell which allows you to configure and display many network-related items



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cacls options

  • The format is: cacls file or folder name [options]


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netsh Examples

  • Create a text file with commands to re-create the IP configuration

    • netsh interface ip dump

  • Ping the gateway IP address of each NIC

    • netsh diag ping gateway

  • In Windows Server 2003

    • Display errors in system log

    • Manage network monitor and performance

    • Defragment a drive

    • Shut down a server


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Terminal Services in Windows

  • GUI-based access to a server

  • Can be used for remote administration or running applications remotely

    • In Windows 2000, you select remote administration on installation

    • In Windows Server 2003, it is installed already and you have to enable it

  • Client software is included in Windows Server 2003 and Windows XP

  • You have to install client software for Windows 2000


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Understanding Streaming Media Services

  • Used to transfer video and audio

  • By default, UDP is used

    • Although TCP and HTTP can be used because of firewall issues in an organization

  • No single standard exists as is true with SMTP, HTTP, POP3, and others

  • Broadcast methods

    • unicast – each packet is sent individually to each client

    • multicast – each packet is sent to many clients


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Understanding Streaming Media Services

  • Helix Universal Server from Real Networks is popular

    • Recognizes both Real Networks protocols (RTSP, PNA) and the Microsoft protocol (MMS)

  • Windows Media Services is a Windows component

  • Most common formats are Real Media, Windows Media, Quick Time (Mac).


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Understanding E-Commerce Servers

  • Can be as simple as a product list and a shopping cart

  • Can be as complex as amazon.com or dell.com

  • Microsoft Commerce Server is an add-on to IIS

    • Incorporates a number of features required for a typical e-commerce site

    • Highly customizable


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Summary

  • Use FTP to transfer files

  • You use News servers to set up threaded discussions on a variety of topics

  • Telnet and Windows Terminal Services allow you to remotely administer a server

  • Streaming media servers are used for video and audio

  • E-commerce servers focus on selling and in general, communicating with customers


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