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1. Name: Kritak Biswas
Reg. No.: 212630100120029 OF 2021-22
Roll No.: 26300121080
Dept: CSE , Semester: 8th
Subject: Cryptography & Network Security
Subject Code: PEC-CS801B
Topic Name: Needs of Network Security

2.  Introduction
 Goals of Network Security
 Security Measures
 Security Protocols
 Security Updates
 Diagram
 Conclusions
 Thank You

3. Network security is a critical aspect of modern computing, focusing
on protecting the integrity, confidentiality, and availability of digital
assets within a network. As organizations increasingly rely on
interconnected systems, the need to defend against cyber threats
becomes paramount. Network security encompasses a range of
strategies, technologies, and policies designed to safeguard data,
prevent unauthorized access, and ensure the continuous operation
of networks.

4.  Confidentiality:Protecting sensitive information
from unauthorized access.Implementing
encryption and access controls to safeguard data
privacy.
 Integrity:Ensuring the accuracy and
trustworthiness of data.Employing measures like
checksums and digital signatures to detect and
prevent tampering.

5. Implementing firewalls as a barrier between internal
networks and untrusted external networks to control
incoming and outgoing traffic. Antivirus. Deploying antivirus
solutions to detect and remove malicious software,
protecting systems from viruses, worms, and other
malware .Intrusion Detection Systems (IDS) and Intrusion
Prevention Systems (IPS) Utilizing IDS to monitor network
traffic for suspicious activities and IPS to actively block or
prevent identified threats.

6.  Ensures secure communication over a computer network by
encrypting the data transmitted between systems.
 Provides network layer security, authenticating and encrypting
each IP packet in a communication session.
 A protocol for secure remote login and file transfer, encrypting
data exchanged between client andScurity.

7. Network security updates are crucial to address
emerging threats and vulnerabilities. Regular updates
enhance the resilience of systems and help maintain
a robust defense against cyber threats.
Regularly update operating systems, applications,
and firmware to patch known vulnerabilities. This
mitigates the risk of exploitation by cyber attackers.

9. The multifaceted approach of firewalls, antivirus
tools, encryption, and vigilant monitoring
collectively fortifies networks against a myriad of
cyber threats. Additionally, implementing access
controls, network segmentation, and adhering to
security protocols contribute to a comprehensive
defense strategy.