This document discusses network security. It defines a network and security, and explains that network security involves protecting a network from various threats. The objectives of network security are listed as access, confidentiality, authentication, integrity, and non-repudiation. Types of network security include physical security, perimeter protection, user training, wireless encryption, and MAC address filtering. Components that aid network security are antivirus software, firewalls, intrusion prevention systems, virtual private networks, and security tools like encryption and identity services. Network security requires multiple layers and works through both hardware and software.

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”