Network security
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Network security aims to protect networks from unauthorized access, data loss, and viruses. There are two main types of network security: physical security and logical security. Key goals of network security are confidentiality, integrity, and availability of data. While network security safeguards data through encryption, firewalls, and anti-virus software, it also has disadvantages such as cost and potential for a false sense of security.
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This document provides an overview of information systems and security topics including computer security, authentication mechanisms, firewalls, computer crimes, social impacts of computers, computer viruses, worms, digital signatures and certificates. It discusses information security principles of confidentiality, integrity and availability. It also covers specific authentication mechanisms like passwords, multi-factor authentication, certificates, tokens and biometrics. Additionally, it defines what a firewall is and how it works to inspect and block unauthorized network traffic based on packet rules.
Subhankar Dutta, Cyber security presentation.pptx
This document provides an introduction to cyber threats, including definitions and sources. It discusses three categories of cyber threats: natural threats, unintentional threats, and intentional threats. Several common types of cybersecurity threats are analyzed such as ransomware, malware, social engineering, and phishing. The document also discusses the difference between risks and threats, with risk being the combination of threat likelihood and potential loss. Finally, it categorizes threats into three types - unstructured threats, structured threats, and highly structured threats - based on factors such as resources, organization, funding, and attack methods.
امن نظم المعلومات وامن الشبكات
This document provides an overview of information security topics including:
- Types of security attacks such as those from internal and external attackers.
- Key security concepts like confidentiality, integrity, and availability.
- Examples of security violations involving unauthorized access or modification of files.
- The importance of considering security attacks, mechanisms, and services as major axes in network security.
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Network security
- 2. CONTENTS Introduction Types of Network Security Security from Goals of Network Security Importance of Security Preventive steps for network security Way to secure data Advantages Disadvantages Scopes of improvement Conclusion
- 3. INTRODUCTION Network The networks are comprised of “nodes”, which are “client” terminals and one or more “server” and “host” computer Security Security is the condition of being protected against or loss. In the general case is the concept similar to safety Network Security Controlling systems to prevent any accidental or intentional data loss
- 4. TYPES OF NETWORK SECURITY There are two types of network security 1. Physical Security 2. Logical Security
- 5. SECURITY FROM We need Security from • Unauthorized access • Viruses • Hackers
- 6. GOALS OF NETWORK SECURITY Confidentiality Integrity Availability
- 7. IMPORTANCE OF SECURITY Huge amount of internet access. Huge amount of personal, commercial, governmental, and military information. The vast connectivity also poses monumental risks.
- 8. PREVENTIVE STEPS FOR NETWORK SECURITY Establishing a plan Know your attackers Determine the pain of thresholds Understand the sources of risk
- 9. WAY TO SECURE DATA Encryption Anti-virus Packages Firewall
- 10. ADVANTAGES Network Security Safeguard our data from 1.Hackers 2.unauthorized access 3.Viruses Network Security makes our system robust. Network Security makes the system reliable.
- 11. DISADVANTAGES Cost can be a big factor False sense of Security
- 12. SCOPES OF IMPROVEMENT Cost Difficult to implement Difficult to identify potential threads Compatibility: between two systems Maintenance
- 13. CONCLUSION Network Security is very important for any organization It plays a major role in protecting the network from any type of intrusions, virus attacks, spyware etc.