Introduction Network Security

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Network Security

• Inam Ul Haq
• MS Computer Science (Sweden)
• Inam.bth_at_gmail.com, mr.inam.ulhaq_at_ieee.org
• Discussion forum questions.computingcage.com
• Member of IEEE, ACM, Movement Disorder Society,
  PDF, BossMedia, Michealjfox, Association for
  Information Systems and Internet Society.

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Table of Contents

• Course Objectives
• Subject Parts
• What is security?
• History
• Terminologies

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Subject Objectives

• Security in the context of Network (not computer
  or data)
• Introduce computer and network security concepts.
  
• Understand basic cryptography theory
• Algorithms for symmetric and public key
  encryption
• Digital Signatures, key management, Hash
  functions
• Email Security. Understand Network security
  topics including VPNs Firewalls Viruses,
  Disaster Prevention and Recovery.

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Subject Parts

• 10 Lectures
• 2 Assignments
• Exercises (at the end of each lecture)
• Individual Presentations
• Case Study (Optional)

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What is security?

• Protection of physical assets from enemies
  (traditional definition)
• Security (Wikipedia) The degree of resistance
  to, or protection from, harm.
• Computer Security (William Stalling) The
  protection to an automated information system to
  preserve the integrity, availability, and
  confidentiality of information system resources.
  also called Cyber Security or IT Security OR
• A study to prevent unauthorized access to IS
  related to data, hardware or software. (I prefer
  it).
• Software Security A study to prevent bugs in
  code.
• Network Security A study to prevent unauthorized
  access to data of a network resources. (I prefer
  it). Note if not clear? think about medieval
  castle on slide no.6.
• What is protection? What is Information Security?

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Where are security breaches?
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Exercise

• Find vulnerabilities of main gate of your house.
• Find vulnerabilities to facebook, net-banking,
  EasyPaisa etc.
• Explore and enlist computer threats, computer
  attacks, network attacks
• Explain
• Computing Technologies, Computer Security