1.Introduction to Network Security
Security refers to the set of policies, technologies, and practices designed to protect computer networks and the data flowing through them from unauthorized access, misuse, modification, or disruption. It ensures that communication between devices remains confidential, reliable, and available.
In modern digital infrastructure, network security is critical because organizations depend heavily on interconnected systems such as the internet, cloud platforms, and internal enterprise networks..
2.Core Objectives of Network Security
Networking security is built around three fundamental principles, commonly known as the CIA Triad..
A. Confidentialityensures that sensitive information is accessible only to authorized users. Techniques such as encryption, access control, and authentication are used to prevent data leakage.
b. Integrity ensures that data is accurate and has not been altered intentionally or accidentally during transmission. Hashing algorithms and digital signatures help verify data integrity.
C. vailability ensures that network services and resources remain accessible to legitimate users whenever required. Protection against Denial of Service (DoS) attacks and system failures is essential to maintain availability.
3.Type of network security
1.Physical Network Security
This involves protecting physical components such as routers, switches, servers, and cables from unauthorized physical access. Examples include biometric access, CCTV surveillance, and secure server rooms.
2.Technical Network Security
Technical security focuses on protecting data and systems using technology-based controls. Examples include firewalls, encryption, intrusion detection systems, and antivirus software.
3.ministrative Network Security
Administrative security includes policies, procedures, and user training. It defines user roles, access privileges, and security guidelines within an organization.
4.Network security treats
a. malware includes viruses, worms, trojans, ransomware, and spyware that can damage systems or steal information
b.Phishing involves tricking users into revealing sensitive information such as passwords or banking details through fake emails or websites.
c.Denial of Service (DoS) and Distributed DoS (DDoS)
These attacks aim to overload a network or server, making services unavailable to legitimate users.
4.Man-in-the-Middle (MITM) Attack
In this attack, an attacker secretly intercepts and possibly alters communication between two parties without their knowledge.
5.Unauthorized Access
Occurs when attackers gain access to network resources without permission due to weak passwords or misconfigured systems.
5. Network security device and tool.
a.Firewall
A firewall acts as a barrier between trusted internal networks and untrusted external networks. It filters incoming and outgoing traffic based on predefined security rules.
b.lntrusion Detection System (IDS)
IDS monitors network traffic to detect suspicious activities and generates alerts when potential threats are identified.
c.intrusion Prevention System (IPS)
IPS not only detects threats but also actively blocks malicious traffic in real time.
Virtual Private Network (VPN)
VPN creates a secure, encrypted tunnel over public networks, allowing safe remote access to private networks.
6.Encryption in Network Security
Encryption converts readable data into an unreadable
Requirements: Typescript
Get fast, custom help from our academic experts, any time of day.
Place your order now for a similar assignment and have exceptional work written by our team of experts.
Secure 100% Original On Time Delivery