5. Network Security involves the implementation of
measures to protect the integrity, confidentiality,
and availability of data within a computer
network. It aims to safeguard against
unauthorized access, data breaches, and
disruptions, ensuring a secure and reliable digital
environment
Introduction
6. Importance
Securing networks is crucial for safeguarding sensitive data, ensuring privacy, and maintaining
the integrity of systems. It protects against unauthorized access, financial losses, and
disruptions to operations. Network security is vital for regulatory compliance, preserving trust,
and even has implications for national security. As technology advances, the importance of
robust network security only continues to grow.
7. Confidentiality Availability
CIA Trade
Ensures that information is
accessible only to those who
have the proper authorization.
This involves protecting data
from unauthorized access or
disclosure.
Ensures the accuracy and
reliability of data. It involves
preventing unauthorized
modification or tampering of
data, ensuring that information
remains trustworthy.
Ensures that information and
systems are available and
accessible when needed. This
involves implementing
measures to prevent
disruptions and ensure that
systems remain operational.
Integrity
8. Threats to Networks
Malicious software such as
viruses, worms, and
ransomware can infect
systems and spread across a
network, causing damage
and compromising data.
Phishing involves tricking
individuals into providing
sensitive information, often
through deceptive emails or
fake websites, posing a
significant threat to network
security
MitM attacks involve
intercepting and potentially
altering communication
between two parties,
leading to data interception
or unauthorized access.
Failure to regularly update
and patch software and
systems leaves them
vulnerable to known
exploits and attacks.
Malware Phishing Attacks (DDoS) Attacks:
DDoS attacks flood a
network or service with
excessive traffic, causing
disruptions and making it
inaccessible to legitimate
users
Threats from within an
organization, either
intentional or unintentional,
pose risks to network
security. Insiders may
compromise data or
systems.
(MitM) Attacks
Unpatched Software and
Systems Insider Threats
9. Role of Protocols
in Network Security
● Protocols in network security establish rules for secure
communication. Encryption protocols (SSL/TLS) ensure data
confidentiality, authentication protocols (RADIUS) verify user
identities, access control protocols (TCP/UDP) enforce security
policies, and firewall protocols filter network traffic. Intrusion
detection/prevention, VPN, NTP, secure file transfer, network
layer security, and DNSSEC protocols contribute to a
comprehensive network security framework.
11. Internet Protocol
Security
1. IPsec is a protocol designed to secure internet
communication at the network layer. It provides a set
of security services, including encryption and
authentication, to protect data as it travels across a
network. This is a fundamental aspect of network
security because it ensures the confidentiality and
integrity of the data exchanged between devices on a
network.
12. TLS/SSL (Transport Layer
Security/Secure Sockets
Layer)
● TLS/SSL are protocols that operate at the transport layer of the
network stack. They are widely used to secure communication
over the internet, especially in web browsers. These protocols
establish a secure channel between a user's browser and a
website, ensuring that the data exchanged (such as login
credentials or financial information) is encrypted and protected
from unauthorized access. This is a crucial aspect of network
security, particularly for online transactions and secure data
transfer.
13. SSH (Secure Shell)
SSH is a protocol used for secure remote communication and control of computers. It operates
at the application layer of the network stack. SSH ensures that communication between a user
and a remote server is encrypted and authenticated, preventing unauthorized access and
protecting sensitive information. This is a vital component of network security, especially for
managing and administering remote servers.
14. HTTPS (Hypertext Transfer Protocol
Secure)
HTTPS is a secure version of the standard HTTP protocol used for web communication. It
operates at the application layer of the network stack. By employing TLS/SSL encryption,
HTTPS ensures the confidentiality and integrity of data exchanged between a user's browser
and a website. This is a critical protocol for securing online communication and is a standard
practice in network security, particularly for protecting sensitive information transmitted over
the internet.
15. Tips for
Network Safety
Ensuring network safety is critical to protect sensitive data,
maintain business continuity,. Here are some tips for
enhancing network safety:
• Strong Access Controls: Use robust authentication,
including multi-factor authentication
• Regular Updates: Keep software and systems up to
date with security patches.
• Stay Informed: Keep abreast of cybersecurity threats
and apply relevant updates promptly.
• Firewalls: Employ firewalls to control network traffic
and prevent unauthorized access.
16. Real-Life Examples
The solution
real-life examples of recent security breaches,
offering practical insights into the consequences
of insufficient network security. By examining
notable incidents, we aim to extract valuable
lessons that underscore the importance of robust
security measures. These examples serve as a
tangible illustration of the challenges
organizations face in the digital realm,
emphasizing the need for effective network
security protocols to safeguard against potential
risks and cyber threats.
The Yahoo data breach, disclosed in 2016,
compromised over 3 billion user accounts.
Occurring in 2013-2014, the breach exposed
user names, email addresses, phone
numbers, and hashed passwords. This
incident highlighted the critical need for
robust cybersecurity practices to protect
user data and maintain trust in digital
platforms.
the Yahoo breach
17. What's Coming Next ?
Explore the integration of machine learning and artificial intelligence for advanced threat
detection, revolutionizing proactive defense measures. Understand the Zero Trust security
model, where trust is never assumed, ensuring thorough verification before granting access.
Dive into the potential of blockchain technology to provide enhanced security through
decentralized and tamper-resistant systems, reshaping the landscape of data protection. This
slide offers a sneak peek into the evolving strategies and technologies that will define the
future of network security, ensuring continued resilience against emerging cyber threats.
18. Conclusion
Summarize the importance of network
security protocols, highlighting their role as
guardians in securing digital communication.
Emphasize the need for ongoing vigilance and
improvement in network security practices,
drawing on real-world insights. Conclude with
a call to action for maintaining a secure digital
frontier.
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