1. 1 tohttps://github.com/syaifulahdan/
Computer Network Administration
Introduction
Network Administration
What is Network Administration
The core management areas
Fault management
Master boot Record
Configuration and Name Management
OSI - Account Management
OSI - Performance Management
OSI - Security Management
Structure of Systems and Network Management Organisation
Corporate Networked Environments
Network Administrators Tasks
Tasks of a Network Administrator
How to be a Sys/Net Admin
5. 5 to
Fault management
The facilities that enable the
detection,
isolation, and
correction
of abnormal operation of the OSI
environment.
6. 6 to
Configuration and Name Management
The services and facilities that
• control
• identify
• collect and provide data
to clients and managed objects,
so assisting in continuous operation of
interconnection services.
7. 7 to
OSI - Account Management
The facilities that enable
charges to be established for the use
of managed objects and
costs to be identified for the use of
those managed objects.
8. 8 to
OSI - Performance Management
The Facilities needed to evaluate
Behaviour of managed objects
Effectiveness of communication activities
9. 9 to
OSI - Security Management
Address those aspects of OSI security
essential to:
operate OSI network management
correctly and
to protect managed objects
12. 12 to
Corporate Networked Environments
Have team(s) of specialists in various areas
Well defined tasks
job descriptions
In small networks usually one person
multi-skilled and multi-tasked
In reality – often somewhere in between….
14. 14 to
Tasks of a
Network Administrator
Security Management
Performance Management
Planning for Growth
Fault Management and Recovery
Account/User Management
Networked Application Support
17. 17 to
Planning for Growth
A Network (or any organisation) is not
static
Growth means increased load on a
network. This must be planned for….
Systems eventually need replacement.
This must be planned for – in
advance…
18. 18 to
Fault Management and Recovery
Monitoring
Reporting status
Testing
Fixes and Patches
Updates
Repairs
Change Management
19. 19 to
Account / User Management
Communication Facilities
Connection - Rental - Charges
Hardware Usage
Lease - Rent - Hire
Consumables Usage
Power, Paper, Media (Diskettes, CDs…)
Software Usage
Licensing,
Tolls,
Application usage
20. 20 to
Account / User Management
Accounts are Managed for:
Intrusion detection / prevention
Charging for Services
Legal protection of the Organisation
21. 21 to
Networked Application Support
Client / Server systems support
Internet support
Server support
Applications and Hardware
Helpdesk
Trouble report / Bug fixes
Printing
eMail
22. 22 to
How to be a Sys/Net Admin
(yet another Job Description…)
Learn Operating System basics eg Unix
Learn shell utilities and script programming
Learn how to Install and Configure OS
Learn DNS and Bind
Learn TCP/IP networking
Learn NFS and NIS (or equivalent…)
Learn about system tuning and accounting
Learn Compile and Link (eg C and make)
23. 23 to
SAGE SysAdmin
Job Descriptions
http://www.sage-au.org.au/
http://sageweb.sage.org/jobs/thefield/j
obs-descriptions.html
24. 24 to
Goals of System/Network Administration
Put together a network of computers
Get them running
Keep them running (despite Users….)
Provide a Service to Users
Requires skills of
Mechanic
Sociologist
Researcher
25. Challenges of
System/Network Administration
Systems or Network Administration is
more than just installing computers or
networks.
It is about planning and designing an
efficient community of computers that
allow users to get their jobs done.
26. 26 to
Challenges of Administration
Design Logical, Efficient networks
Easily deploy & update many machines
Decide what services are needed
know the business tasks & customers
Plan and implement adequate security
Provide comfortable User environment
Be able to fix errors and problems
Keep track of & be able to use knowledge
28. 28 to
PRACTICE
Convention or The Best Solution
PRACTICE = “How things are done here”
Have you ever wondered…
Why are things done in certain ways?
Which way is best? Usually it’s because:
Someone did it once, and everyone copied without really
thinking about it
People have thought much about it and this really is the best
way…
An arbitrary choice was made, and it is now a matter of
convention
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Comparison of System/Network
Management Styles
Fire-Fighting
Managing by responding to situations when they happen
(Reactive)
Preventative management
Monitor network and make repairs and changes before
problems appear (Proactive)
These are two opposite extremes.
Most real managers combine both.
30. 30 to
Fire-Fighting
Investigate the Fault or Problem
Isolate the problem and identify/define it
Use tests and tools to diagnose the problem
Solve the problem and document the solution
Prioritize multiple problems
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Sources of Information for
System/Network Administrators
Manuals and Online Documentation
World Wide Web
RFCs, FYIs, IENs
News groups, Discussion lists, WebLogs
Meetings and Seminars
SAGE/Usenix, Novell Brainshare, Microsoft
TechNet/TechEd
How-To books