MIIS 1

Managing Internet Information Services

Liu, Peek, Jones. Buus, & Nye

MIIS 2

Purpose

How to plan, setup & manage Internet services

Necessary Skills– UNIX System Administration– Writing, Preparing, Org. Data

MIIS 3

Internet Service Concepts

What is the Internet How are services structured TCP/IP How Clients talk to servers

MIIS 4

What is the Internet

A Federation of Networks speaking same protocols

Connected by high-speed “telephone” circuits

Roles played– Information provider– Customer– Connection provider (ISP)

MIIS 5

Connections

Major accessing methods– Shell Access

– Dial-up networking

– Leased circuits

Full-time IP connection– expensive

– hard to setup

– Fastest

Dial-up (Shell)– terminal emulation

– Not speaking TCP/IP

– Limited functionality

TCP/IP over dial-up– SLIP/ PPP

– ISDN

MIIS 6

What is the Internet

Computers– CPU Resources– Information provided– Unix

People Places

MIIS 7

Structure

Client / Server– Client - User interaction– Server - Task completion

Internet vs. CompuServe

MIIS 8

TCP/IP

Most common protocols in suite Packets Media Layered

MIIS 9

Protocols

IP – Address

– dotted-octet

– four sets of 8 bits

– subnets

– hierarchy of assignment

– simplified routing

TCP– Guaranteed delivery

– serialization of data (stream mimic)

– port numbers

UDP– Port numbers

– Checksum (small size)

MIIS 10

Servers

Un*x - Inetd– Superserver– Dynamic servers– Matchmaker– Based on port

Win - IIS, SuiteSpot, etc Standalone

– Faster– For busy servers– Run as daemon

MIIS 11

Naming

Unique Address & Name Domain Name System Least to Most specific label Aliases

MIIS 12

WWW example

User menu click Client translates to server query TCP packet to port 80 (default) Server opens Reads file (etc.) Sent to client One connection per transaction FTP & Gopher similar

MIIS 13

Intro to Information Services

Future Publications / Databases Simple & Cheap Expected High-tech toy to business tool

MIIS 14

Services 1

Email based– High-priority– largest customer base– Types

Archive Mailing list

FTP– Limited login– hard to search– various types of files transferred

MIIS 15

Services 2

Telnet– Login– Easy to adapt existing services– Ex: DUATS

Finger– Identify people– Small amounts of info transfer

Gopher– Directory based– Easy to setup

MIIS 16

Services 3

WWW– FTP / Wais client / Gopher– HTML– Flexible– Dynamic document linking

WAIS– Document search– Minimal browse– Works best with lots of words– Large indexes

MIIS 17

What to do with Internet Services

Internal– Central Corporate Information– Company Logos, Style sheets,

Forms, etc.– Timecards– software– employee directory

External– Global Network Navigator– BSDI (BSD/386 man pages)– Customer support & Information