Network Security
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This document provides an overview of network security. It discusses the need for network security to protect network data and manage access. Vulnerabilities in common network protocols like TCP/IP are described. The CIA triad of confidentiality, integrity, and availability is explained as key aspects of network security. Methods for achieving security like encryption, digital signatures, and access control are summarized. Client-server architecture and how security applies to email and SSL/TLS protocols are briefly outlined. The presentation concludes with a discussion of IPsec policies and benefits of network security for businesses.
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This document provides an overview of cryptography and network security concepts from the textbook "Cryptography & Network Security" by William Stallings. It covers topics like confidentiality, integrity, availability, security threats/attacks, security services, security mechanisms, and the OSI security architecture. The document includes chapter objectives, definitions of key terms, descriptions of security concepts, examples, and review questions. The overall purpose is to introduce fundamental cryptography and network security principles.
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Syllabus
Chapter-1
Introduction to objective, scope and outcome the subject
Chapter 2
Introduction: Scope and Specialization of Civil Engineering, Role of civil Engineer in Society, Impact of infrastructural development on economy of country.
Chapter 3
Surveying: Object Principles & Types of Surveying; Site Plans, Plans & Maps; Scales & Unit of different Measurements.
Linear Measurements: Instruments used. Linear Measurement by Tape, Ranging out Survey Lines and overcoming Obstructions; Measurements on sloping ground; Tape corrections, conventional symbols. Angular Measurements: Instruments used; Introduction to Compass Surveying, Bearings and Longitude & Latitude of a Line, Introduction to total station.
Levelling: Instrument used Object of levelling, Methods of levelling in brief, and Contour maps.
Chapter 4
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Chapter 5
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Chapter 6
Environmental Engineering: Environmental Pollution, Environmental Acts and Regulations, Functional Concepts of Ecology, Basics of Species, Biodiversity, Ecosystem, Hydrological Cycle; Chemical Cycles: Carbon, Nitrogen & Phosphorus; Energy Flow in Ecosystems.
Water Pollution: Water Quality standards, Introduction to Treatment & Disposal of Waste Water. Reuse and Saving of Water, Rain Water Harvesting. Solid Waste Management: Classification of Solid Waste, Collection, Transportation and Disposal of Solid. Recycling of Solid Waste: Energy Recovery, Sanitary Landfill, On-Site Sanitation. Air & Noise Pollution: Primary and Secondary air pollutants, Harmful effects of Air Pollution, Control of Air Pollution. . Noise Pollution Harmful Effects of noise pollution, control of noise pollution, Global warming & Climate Change, Ozone depletion, Greenhouse effect
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- 2. Agenda Network Security for Business NEED FOR NETWORK SECUIRTY WHAT IS NETWORK SECUIRTY SECURITY IN APPLICATIONS
- 3. Need for Network Security o Network security is any activity designed to protect the usability of network data it includes both the hardware and software technologies. o Effective network security manages access to the network, it targets variety of threats and stops them from entering or spreading on your network.
- 4. Vulnerabilities in TCP/IP Plain TEXT Weak Authentication between client and webserver No solution to syn-packet flooding IP Layer susceptibility to many vulnerabilities dude to IP spoofing attacks
- 5. CIA TRIAD ◦ Confidentiality is apart network security makes sure that the data is available to intended authorized persons ◦ Makes sure that the data is reliable is not changed by unauthorized persons ◦ Availability is to make sure that the data, network resources/services continuously available to the legitimate users whenever they require
- 6. Achieving network security Encipherment Digital signature Access control
- 7. Client-Server Architecture Communication between server and client Data exchange between the application and webserver
- 8. Email Security Confidentiality Authentication Integrity Proof of delivery Non repudiation Proof of submission
- 9. SSL ◦ SSL (Secure Sockets Layer) and its successor, TLS (Transport Layer Security), are protocols for establishing authenticated and encrypted links between networked computers. Although the SSL protocol was deprecated with the release of TLS 1.0 in 1999, it is still common to refer to these related technologies as “SSL” or “SSL/TLS.” The most current version is TLS 1.3, defined in RFC 8446 (August 2018)
- 10. IPSEC POLICIES All computers/server will always request security for all IP Based traffic Computer will only secure communication when Security is requested
- 11. Benefits Network security Resource sharing Streamlined business process Collaboration among department Improved customer relations
- 12. THANK YOU TECADE MANAGED INC