Fundamentals of Network Security in Computer Networks
- 1. Fundamentals of Network Security in Computer Networks digitdefence.com
- 2. Introduction to Network Security Protecting Data and Resources Network security safeguards against unauthorized access, use, disclosure, disruption, modification, or destruction of sensitive data and network resources. Ensuring Confidentiality, Integrity, and Availability It enforces confidentiality (keeping data secret), integrity (maintaining data accuracy), and availability (ensuring network and data accessibility). digitdefence.com
- 3. Threats and Vulnerabilities in Computer Networks Malware Harmful software designed to damage or steal data, including viruses, worms, trojans, and ransomware. Phishing Deceptive attempts to obtain sensitive information through emails, websites, or messages disguised as legitimate sources. Denial-of-Service Attacks Intentional disruptions that prevent legitimate users from accessing network resources or services. digitdefence.com
- 4. Access Control and Authentication Mechanisms Password Authentication Traditional method using usernames and passwords for access control. Biometric Authentication Utilizes unique biological characteristics like fingerprints or facial recognition for identification. Multi-Factor Authentication Enhances security by requiring multiple forms of verification, such as password, code, and fingerprint. digitdefence.com
- 5. Firewalls and Network Segmentation 1 Firewall Function Acts as a barrier between a network and external threats, inspecting incoming and outgoing traffic. 2 Network Segmentation Divides a network into smaller, isolated segments to limit the impact of security breaches. digitdefence.com
- 6. Encryption and Secure Communication Encryption Transforms data into an unreadable format, protecting it from unauthorized access. Secure Communication Protocols Protocols like SSL/TLS ensure secure data exchange between clients and servers. digitdefence.com
- 7. Intrusion Detection and Prevention Systems 1 Intrusion Detection 2 Intrusion Prevention 3 Security Information and Event Management digitdefence.com
- 8. Secure Network Protocols and Standards 1 TCP/IP Foundation for network communication, providing secure data transmission. 2 HTTPS Secure version of HTTP for encrypted web communication. 3 VPN Creates a secure connection over a public network, protecting data privacy. digitdefence.com
- 9. Secure Network Design and Configuration 1 Hardening Securing network devices and systems by disabling unnecessary services and features. 2 Segmentation Dividing a network into smaller, isolated segments to limit the spread of threats. 3 Regular Updates Applying security patches and updates to address vulnerabilities. digitdefence.com