Web Server 2

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Web Server

A software program or server computer

equipped to offer World Wide Web access.

Web servers allow you to serve contentover the Internet using the Hyper Text

Markup Language (HTML).

The Web server accepts requests frombrowsers like Netscape and Internet

Explorer and then returns the appropriate

HTML documents.


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Web Server

A web server is a computer with special software

to host web pages and web applications.

A computer that provides Web services and pagesto intranet and Internet users.

A web server serves web pages to clients across

the Internet or an Intranet. The web server hosts

the pages, scripts, programs, and multimedia files

and serves them using HTTP, a protocol designed

to send files to web browsers and other protocols.


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Web Server Cont...

A number of server-side technologies can

be used to increase the power of the server

beyond its ability to deliver standard HTMLpages

These include CGI scripts, server-side

includes, SSL security, and Active ServerPages(ASPs)


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How Web servers Work -

Overview


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Overview Cont... Perhaps the most important expansion on

this was the concept of dynamic content

(i.e., Web pages created in response to a

user's input, whether directly or indirectly). The oldest and most used standard for doing

this is Common Gateway Interface (CGI)

It basically defines how a Web servershould run programs locally and transmit

their output through the Web server to the

user's Web browser that is requesting the

d namic content.


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Overview Cont...


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Web Server and Browser

Interaction A Web Browser acts as an interface

between the user and the Web server

The browser carries out the following on

behalf of the user

Contacts a web server

Sends a request for information

Receives the information and

Displays it on the user's computer


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How Does a Web Server Accept

Connections? Accept network connections from browsers

Retrieve content from disk

Run local CGI programs

Transmit data back to clients

Be as fast as possible

Support multi-threading and multi-

processing


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How Do You Organize Web

Servers for Performance? Dynamic content typically relies on heavy

database usage or processing of

other program code, which takes up manyserver-side resources.

Web site that has grown popular beyond its

immediate means of serving content andways to spread this load out


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Load Balancing

DNS balancing (round-robin type)

Hardware load balancing

Software load balancing

Reverse proxying

Content spreading across hosts Content spreading across outsourced

providers


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Load Balancing Cont...


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How Does Web Server Security

Work? Security of the data stream itself so that it

may not be viewed or modified by a

malicious third party Security of the content itself -- the

authentication and authorization of people

to view and change that content


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Server Version Operating System Price Range

AOLserver 3.1 Digital UNIX, SCO, HPUX, Windows NT, Linux,

Windows 95, FreeBSD, Windows 98, IRIX, Solaris

Free

Allegro RomPager 3.6 NetBSD, Digital UNIX, BSDI, AIX, OS/2,

Windows 3.x, SCO, HPUX, Novell NetWare,

Macintosh, Be OS, Embedded, Windows NT,Linux, Windows CE, MS-DOS, VM/CMS,

MVS,VMS, QNX, S/400, Windows 95, FreeBSD,

Windows 98, IRIX, Solaris, Amiga

[email protected]

AnalogX SimpleServer:WWW 1.05 Windows NT, Windows 95, Windows 98 Free

Apache 1.3.17 NetBSD, Digital UNIX, AIX, OS/2, Windows 3.x,

SCO, HPUX, Novell NetWare, Macintosh, Be OS,

Windows NT, Linux, VMS, AS/400, Windows 95,

FreeBSD, IRIX, Solaris

Free

Baikonur Web App Server 1.9 Windows NT, Windows 95 $995

Commerce Server/400 1.0D AS/400 $4995 (suggested

retail)

EMWAC HTTP Server 0.991 Windows NT Free

EmWeb Embedded Web Server R5_2_1 HPUX, Embedded, Windows NT, Linux, Windows

95, Windows 98, Solaris

Call Agranat Systems

Enterprise Server 3.0 Novell NetWare $1,295

GoAhead WebServer 2.1 HPUX, Embedded, Windows NT, Linux, Windows

CE, QNX, Windows 95, Windows 98, IRIX

Free, embedded web

Server

Internet Information Server 4.0 Windows NT Free with NT 4.0

option pack

Java Server 1.1 OS/2, HPUX, Windows NT, Linux, Windows 95,

IRIX, Solaris

$295
http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=AOLserver&04_Version=3.1http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=Allegro%20RomPager&04_Version=3.06mailto:[email protected]://webcompare.internet.com/cgi-bin/detail.pl?03_Server=AnalogX%20SimpleServer:WWW&04_Version=1.05http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=Apache&04_Version=1.3.17http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=Baikonur%20Web%20App%20Server&04_Version=1.9http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=Commerce%20Server/400&04_Version=1.0Dhttp://webcompare.internet.com/cgi-bin/detail.pl?03_Server=EMWAC%20HTTP%20Server&04_Version=0.991http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=EmWeb%20Embedded%20Web%20Server&04_Version=R5_2_1http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=Enterprise%20Server&04_Version=3.0http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=GoAhead%20WebServer&04_Version=2.1http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=Internet%20Information%20Server&04_Version=4.0http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=Java%20Server&04_Version=1.1http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=Java%20Server&04_Version=1.1http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=Internet%20Information%20Server&04_Version=4.0http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=GoAhead%20WebServer&04_Version=2.1http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=Enterprise%20Server&04_Version=3.0http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=EmWeb%20Embedded%20Web%20Server&04_Version=R5_2_1http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=EMWAC%20HTTP%20Server&04_Version=0.991http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=Commerce%20Server/400&04_Version=1.0Dhttp://webcompare.internet.com/cgi-bin/detail.pl?03_Server=Baikonur%20Web%20App%20Server&04_Version=1.9http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=Apache&04_Version=1.3.17http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=AnalogX%20SimpleServer:WWW&04_Version=1.05mailto:[email protected]://webcompare.internet.com/cgi-bin/detail.pl?03_Server=Allegro%20RomPager&04_Version=3.06http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=AOLserver&04_Version=3.1


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Server Version Operating System Price Range

Lotus Domino Go Webserver 4.6.1 Digital UNIX, AIX, OS/2, HPUX, Windows NT,

Windows 95, IRIX, Solaris

$495; free demo

Netscape Enterprise Server 3.5.1 Digital UNIX, AIX, HPUX, Windows NT, IRIX $1,295

Oracle Web Application Server 3.01 HPUX, Windows NT, Windows 95, Solaris call Oracle

Spinnaker 3.0 Windows NT, Windows 95 $249

Viking 1.06 Windows NT, Windows 95, Windows 98 $100 for 90-day trial

WebBase 4.5 Windows 3.x, Windows 95 $695

WebSite Professional 2.5.8 Windows NT, Windows 95, Windows 98 $799

Xitami 2.4d8 NetBSD, Digital UNIX, BSDI, AIX, OS/2,

Windows 3.x, SCO, HPUX, Windows NT, Linux,

VMS, QNX, Windows 95, FreeBSD, IRIX, Solaris

Xitami: free:

Xitami/Pro: $99
http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=Lotus%20Domino%20Go%20Webserver&04_Version=4.6.1http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=Oracle%20Web%20Application%20Server&04_Version=3.01http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=Spinnaker&04_Version=3.0http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=Viking&04_Version=1.06http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=WebBase&04_Version=4.5http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=WebSite%20Professional&04_Version=2.5.8http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=Xitami&04_Version=2.4d8http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=Xitami&04_Version=2.4d8http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=WebSite%20Professional&04_Version=2.5.8http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=WebBase&04_Version=4.5http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=Viking&04_Version=1.06http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=Spinnaker&04_Version=3.0http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=Oracle%20Web%20Application%20Server&04_Version=3.01http://webcompare.internet.com/cgi-bin/detail.pl?03_Server=Lotus%20Domino%20Go%20Webserver&04_Version=4.6.1


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Personal Web Server

Microsoft's Personal Web Server (PWS) is ascaled-down version of the commercialInformation Internet Server (IIS) included with the

Server edition of Microsoft Windows NT. Designed for Windows 95/98/ME and Windows

NT Workstation users.

PWS is a great entry-level Web server that makes

it easy to publish personal home pages, servesmall Web sites, and share documents via a localintranet.

PWS is one of the best servers available for

helping to get you up and running quickly.


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Personal Web Server Cont

Wizards are included to guide you through theprocess of setting up home pages and sharing files,and the PWS administrator reduces the complexityof actually running the Web server itself.

One of the best uses for PWS is as a platform fortesting out Web sites on your Windows95/Windows NT Workstation computers beforehosting them on the Internet

This allows you to check the validity of links,scripts, and applications as well as to ensure thatthe overall organization of the site is functioningcorrectly


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Personal Web Server Cont

The server does include support for Active Server

Pages (ASP), script debugging

PWS presents the ability to developtransactional Web applications using the

Microsoft Transaction Server

No UNIX version, Lacks some of the more

advanced features included with IIS, Only runs onWindows 95/98/ME Windows NT Workstation,

Slower than IIS


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H/W Requirements

For Intel-based Windows95/98/ME,

Windows NT 4.0 Workstations

Intel 486 33 MHz minimum /Pentium 133 MHzrecommended

16 MB RAM minimum / 32 MB RAM

recommended40 MB of free HDD Space for installation


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Personal Web Server Installation

Down load PWS from the site

http://www.microsoft.com/msdownload/nto

ptionpack/askwiz.asp Run setup program and follow the

instructions
http://www.microsoft.com/msdownload/ntoptionpack/askwiz.asphttp://www.microsoft.com/msdownload/ntoptionpack/askwiz.asphttp://www.microsoft.com/msdownload/ntoptionpack/askwiz.asphttp://www.microsoft.com/msdownload/ntoptionpack/askwiz.asp


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Apache Web Server

Apache remains the king of Web servers despite

intense efforts by Microsoft and Netscape to gain

dominance in the market Its cross-platform support, protocol support

(HTTP/1.1), modularity (API), security, logging,

and overall performance and robustness

Apache runs on Windows (95/98/NT), OS/2,and all the major variants of Unix

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Web Server 2