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1. BY,
K.B.Snega,M.sc(CS),
Nadar Saraswathi College of Arts And
Science.
NETWORK SECURITY

2. Network
 A Network is a
series of points or
nodes
interconnected by
communication
paths.
 Interconnect
with other
networks and
contain sub
networks.

3. Security
Security is “Freedom
from risk or danger.
“ The ability of a
system to protect
information and
system resources with
respect to
confidentiality and
integrity.

4. Network security:
 Any activities designed to protect your network .
Target- variety of threats and stops them from
entering or spreading on your network.
Handled by a network administrator.

5. Objective
• Access
• Confidentiality
• Authentication
• Integrity
• Non‐repudiation

6. Types
Five types of network security can aid in secure
networking. • Physical security
• Perimeter protection
• User training and education
• Wireless encryption protocol (WEP)
• MAC address filtering

7. Working and Components
Working:
We need multiple layers of security
Network security is accomplished through
hardware and software.
Network security components:
Anti-virus and anti-spyware
Firewall Intrusion
prevention systems
Virtual Private Networks

8. Security tools
• Antivirus software packages
• Secure network infrastructure
• DNS hardware and software
• Virtual private network
• Identity services
• Encryption
• Security management

9. CONCLUSION
 The network security field evolve more rapidly to
deal with the threats further in the future.
 “As threats tweaks, Security tremendously
Tweaks”