MIIS1 Managing Internet Information Services Liu, Peek, Jones. Buus, & Nye.
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Transcript of MIIS1 Managing Internet Information Services Liu, Peek, Jones. Buus, & Nye.
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