Aspects of Network Security
โขDownload as PPT, PDFโข
0 likesโข41 views
This document discusses various aspects of network security. It outlines four key aspects: 1) Privacy - ensuring confidentiality of messages by encrypting transmissions so only the intended recipient can understand them. 2) Message integrity - ensuring data arrives at its destination exactly as sent with no changes, which is important for financial transactions. 3) Endpoint authentication - authenticating the identity of the sender to prevent impersonation. 4) Non-repudiation - providing proof of transmission to prevent senders from denying messages. The document also discusses three levels of network security controls: physical, technical, and administrative. Physical controls restrict access to network infrastructure. Technical controls protect stored and transmitted data. Administrative controls manage user
Report
Share
Report
Share
Recommended
System Security enviroment in operating system
This document summarizes key aspects of security in operating systems. It outlines security goals of confidentiality, integrity and availability. It defines security terminology like encryption, decryption, plain text and cipher text. It also describes different types of intruders like masqueraders, misfeasors and clandestine users who threaten system security. The document provides an overview of security issues in operating systems and common security measures.
Chapter- I introduction
Introduction,Goals of Computer Security,Level of Impact,Challenges of Computer Security,Types of Attack
Types of attacks
This document discusses types of attacks on computer and network security. It defines passive and active attacks. Passive attacks monitor systems without interaction and include interception and traffic analysis attacks. Interception involves unauthorized access to messages. Traffic analysis examines communication patterns. Active attacks make unauthorized changes and include masquerade, interruption, fabrication, session replay, modification, and denial of service attacks. Masquerade involves assuming another user's identity. Interruption obstructs communication. Fabrication inserts fake messages. Session replay steals login information. Modification alters packet addresses or data. Denial of service deprives access by overwhelming the target.
Client server network threat
This document discusses security threats in client-server networks. It identifies several types of security risks like unauthorized access, insider threats, and intercepted communications. Specific threats to clients include viruses, worms, and Trojan horses, while threats to servers involve eavesdropping, denial of service attacks through overloading or packet modification. The document then outlines some methods to protect against these threats, such as trust-based security, security through obscurity, password schemes, and biometric systems.
Security
The document discusses various topics related to computer security including threats, attacks, intruders, malware, and security techniques. It describes common security threats like viruses, worms, bots, rootkits, and intruders. It also covers computer security objectives of confidentiality, integrity and availability. Authentication, access control, intrusion detection, and malware defense are discussed as security techniques.
Data and Message Security
Electronic data and message security are important for protecting financial transactions and company communications. Unauthorized network monitoring called packet sniffing is a major threat to data security, while message security programs protect a company's messaging infrastructure and personal employee messages related to its vision and mission. Forms of authentication and encryption are the basis of data and message security, with encryption mutating information into an unreadable format without a decryption key. Advantages of encryption include private keys being impossible to deduce from public keys, eliminating the need for senders and receivers to share secrets over public channels.
What is Cryptography and Types of attacks in it
Hi friends,
Here is the ppt on what is cryptography and types of attacks with an in-depth explanation of every topic in it.
System Security
The document discusses various topics related to computer security including threats, attacks, and security mechanisms. It defines key terms like intruder, threat, attack, and different types of security breaches. It describes common attack methods like masquerading, replay attacks, and man-in-the-middle attacks. It also discusses security mechanisms at the physical, human, operating system, and network levels and techniques for user authentication.
Recommended
System Security enviroment in operating system
This document summarizes key aspects of security in operating systems. It outlines security goals of confidentiality, integrity and availability. It defines security terminology like encryption, decryption, plain text and cipher text. It also describes different types of intruders like masqueraders, misfeasors and clandestine users who threaten system security. The document provides an overview of security issues in operating systems and common security measures.
Chapter- I introduction
Introduction,Goals of Computer Security,Level of Impact,Challenges of Computer Security,Types of Attack
Types of attacks
This document discusses types of attacks on computer and network security. It defines passive and active attacks. Passive attacks monitor systems without interaction and include interception and traffic analysis attacks. Interception involves unauthorized access to messages. Traffic analysis examines communication patterns. Active attacks make unauthorized changes and include masquerade, interruption, fabrication, session replay, modification, and denial of service attacks. Masquerade involves assuming another user's identity. Interruption obstructs communication. Fabrication inserts fake messages. Session replay steals login information. Modification alters packet addresses or data. Denial of service deprives access by overwhelming the target.
Client server network threat
This document discusses security threats in client-server networks. It identifies several types of security risks like unauthorized access, insider threats, and intercepted communications. Specific threats to clients include viruses, worms, and Trojan horses, while threats to servers involve eavesdropping, denial of service attacks through overloading or packet modification. The document then outlines some methods to protect against these threats, such as trust-based security, security through obscurity, password schemes, and biometric systems.
Security
The document discusses various topics related to computer security including threats, attacks, intruders, malware, and security techniques. It describes common security threats like viruses, worms, bots, rootkits, and intruders. It also covers computer security objectives of confidentiality, integrity and availability. Authentication, access control, intrusion detection, and malware defense are discussed as security techniques.
Data and Message Security
Electronic data and message security are important for protecting financial transactions and company communications. Unauthorized network monitoring called packet sniffing is a major threat to data security, while message security programs protect a company's messaging infrastructure and personal employee messages related to its vision and mission. Forms of authentication and encryption are the basis of data and message security, with encryption mutating information into an unreadable format without a decryption key. Advantages of encryption include private keys being impossible to deduce from public keys, eliminating the need for senders and receivers to share secrets over public channels.
What is Cryptography and Types of attacks in it
Hi friends,
Here is the ppt on what is cryptography and types of attacks with an in-depth explanation of every topic in it.
System Security
The document discusses various topics related to computer security including threats, attacks, and security mechanisms. It defines key terms like intruder, threat, attack, and different types of security breaches. It describes common attack methods like masquerading, replay attacks, and man-in-the-middle attacks. It also discusses security mechanisms at the physical, human, operating system, and network levels and techniques for user authentication.
System Security- Firewalls and ID System
Intruders
Classification of ID system
Malicious software
Types of virus
Firewalls
Characteristics of firewalls
Firewalls responsibilities
Types of attack -Part3 (Malware Part -2)
This document discusses various types of malware and cyber attacks. It describes crimeware as software used to perpetrate illegal acts, such as identity theft, and notes it can spread through viruses, Trojans, worms, spyware or adware. Trapdoors and backdoors allow unauthorized access to systems by bypassing authentication. Keyloggers record keystrokes to steal personal or financial information. Spoofing tricks networks by masquerading as a legitimate entity. Phishing uses fraudulent emails to steal information. Sniffing monitors network traffic to extract passwords and other data from packets. Port scanning identifies open ports that could enable unauthorized access. SQL injection allows interference with database queries and access to data.
Network security for E-Commerce
Network Security is the process of taking physical and software preventative measures to protect the underlying networking infrastructure from unauthorized access, misuse, malfunction, modification, destruction, or improper disclosure, thereby creating a secure platform for computers, users and programs to perform their permitted critical functions within a secure environment. - sans.org
Intruders
An intruder is defined as an unauthorized individual or program that enters a computer system. There are three main types of intruders: masqueraders who penetrate access controls using a legitimate user's account; misfeasors who are legitimate users that access unauthorized data or resources; and clandestine users who seize supervisory control to evade auditing. Intrusion detection aims to identify intruders quickly before damage occurs through monitoring techniques like analyzing audit records of user activity and system logs.
Hacking
This document summarizes information about computer security and hacking. It discusses how the internet has grown rapidly while security has lagged behind, allowing legions of hackers to emerge. It covers various types of computer crimes throughout history from the 1980s to 2000s involving viruses, financial theft, and denial of service attacks. The document also describes common hacking techniques like spoofing, session hijacking, buffer overflows, password cracking, and denial of service attacks. It emphasizes that computer security requires ongoing improvement as hackers become more sophisticated over time.
Cryptographic Security
The document discusses cryptographic security. It outlines security goals of confidentiality, integrity, and availability. It describes common security attacks like snooping, traffic analysis, modification, masquerading, replaying, denial of service, and their classification as passive or active. It also discusses security services like authentication, data confidentiality, data integrity, and nonrepudiation. Various security mechanisms are presented like encipherment, digital signatures, access control, and traffic padding that provide the security services and defend against different attacks. Basic concepts of cryptography like plaintext, ciphertext, ciphers, keys, encryption, and decryption are also introduced.
Security Controls Over E-Commerce
This document summarizes various security controls for e-commerce. It discusses controls to protect client computers like virus control, integrity control, and controlling access to illegitimate websites. It also discusses controls to protect the e-commerce channel, including encrypting transaction information to maintain privacy, using digital signatures to ensure integrity of transactional information is maintained, and making the channel available. Finally, it discusses controls to protect the e-commerce server, including access controls, encryption, firewalls, and intrusion detection systems.
Basic Security Chapter 1
This document discusses basic security concepts, including definitions of security, assets, and the principle of easiest penetration. It describes three classifications of protection: prevention, detection, and reaction. Examples are given for physical and cyber security. The goals of security are defined as integrity, confidentiality, and availability. Common security threats are interruption, interception, modification, and fabrication. Vulnerabilities in computing systems can occur in data, software, hardware, and exposed assets. Methods of defense include encryption, software/hardware controls, policies, and physical controls. System access control and data access control are important methods for making systems secure using identification, authentication, and access authorization.
Mobile security
This document summarizes security features and vulnerabilities across 2G, 3G, and 4G mobile networks. It discusses:
- Security elements in 2G networks like authentication, encryption, and vulnerabilities due to weak encryption algorithms and unsecured terminals.
- New security features in 3G networks like network authentication, explicit integrity checks, switch-based security, and flexibility to enhance security over time.
- 4G network security architecture focusing on network access, domain, user, and application security as well as visibility and configuration of security features.
- Key security risks in 4G like distributed networks, complex business models, and minimizing security spending. Preventative measures discussed include interoperability standards, security audits
Security Mechanisms
Vulnerabilities are weaknesses that attackers can exploit to gain unauthorized access to a network or its resources. Attacks are attempts to damage, access, or misuse assets without permission. Network security mechanisms detect, prevent, and recover from attacks using methods like routing control, traffic padding, encryption, access control, digital signatures, and ensuring data integrity.
Attack lecture #2 ppt
This document defines attacks and types of attacks on information security assets. It discusses passive attacks that obtain information without affecting systems, active attacks that change systems, and insider attacks from within an organization. Specific attack types described include phishing, hijacking, spoofing, buffer overflows, exploits, and password attacks using dictionaries, brute force, or hybrid methods.
network security
Network security consists of policies and practices to prevent unauthorized access to computer networks and resources. It involves authenticating users, typically with a username and password but also using additional factors like security tokens. Networks are subject to both passive attacks where an intruder intercepts data and active attacks where an intruder disrupts the network or conducts reconnaissance to access assets. Common network security concepts include authentication, types of attacks, and security management.
Chapter 1: Overview of Network Security
This document provides an overview of network security. It discusses security attacks like passive attacks (eavesdropping) and active attacks (modifying data). It outlines security services like confidentiality, authentication, integrity, non-repudiation, and access control. It also discusses methods of defense against attacks, including encryption, software/hardware controls, security policies, and physical controls. The document defines key security terms and concepts.
Security issues in e business
This document discusses various e-business security issues in cyberspace. It outlines basic security issues like authentication, authorization, confidentiality, integrity and non-repudiation. It also describes common security threats like denial of service attacks, unauthorized access, and theft/fraud. Finally, it explains different types of security techniques used like encryption, decryption, cryptography, virtual private networks, digital signatures, and digital certificates.
Cia security model
Just created a slideshare presentation giving a basic introduction to the Confidentiality, Integrity & Availability (CIA) Security Model. You can see more slideshows on http://www.slideshare.net/ImranahmedIT or visit my website: http://imran-ahmed.co.uk
Lect13 security
The document discusses computer system security. It explains that security requirements vary based on the operating environment. Security goals are defined by policies, while mechanisms are used to achieve those goals. Common security goals are secrecy, privacy, authenticity, and integrity of information. Both internal and external security threats are discussed, along with potential attacks like viruses, worms, and logic bombs. Methods of passive attacks like browsing and active attacks on message communications are also summarized. The importance of cryptography for secure communication is highlighted. Symmetric and asymmetric cryptosystems are compared for encrypting messages between systems.
Chapter 1 Introduction of Cryptography and Network security
(1) Cryptography and network security are important topics that involve terminology like plaintext, ciphertext, encryption, decryption, and cryptanalysis. (2) The document discusses principles of security like confidentiality, integrity, authentication, non-repudiation, and availability and how attacks can compromise them. (3) It also covers security services, mechanisms, and models in the OSI standard to enhance security and counter different types of security attacks.
Ppt.1
The document discusses the OSI security architecture, including security attacks, services, and mechanisms. It defines passive and active security attacks and lists examples. It also defines security services like authentication, access control, data confidentiality, data integrity, and nonrepudiation. Finally, it discusses security mechanisms like encipherment and the use of secret information shared between principals.
Information System Security introduction
The document defines information security and discusses its history and key concepts. It outlines the evolution of information security from physical security controls to modern approaches addressing confidentiality, integrity, and availability of information. Key aspects covered include definitions of security, the CIA triad/diamond models, cryptography, access control models, and digital signatures.
Computer security
This document provides an overview of computer security concepts. It discusses threats like viruses, worms, bots and rootkits that can compromise security. It defines key terms like assets, attacks, intruders and vulnerabilities. The CIA triad of confidentiality, integrity and availability is explained as the standard for information security. Common attacks are also outlined, such as password cracking, man-in-the-middle, spoofing and social engineering. Malware is defined and the characteristics of viruses, worms and trojans are described.
information security (network security methods)
This document provides an overview of information security concepts. It discusses basic security principles like how no system is completely secure but security measures can reduce risks. It then summarizes key aspects of network security such as protecting systems through configuration, detection of issues, and rapid response. Common network security methods are outlined like access control, anti-malware tools, and firewalls. Goals of security like confidentiality, integrity and availability are defined in relation to the CIA triad model. Threats to these goals are also summarized.
Information security ist lecture
These slides contains Information Security first lecture with the contents of Network security and its methods
More Related Content
What's hot
System Security- Firewalls and ID System
Intruders
Classification of ID system
Malicious software
Types of virus
Firewalls
Characteristics of firewalls
Firewalls responsibilities
Types of attack -Part3 (Malware Part -2)
This document discusses various types of malware and cyber attacks. It describes crimeware as software used to perpetrate illegal acts, such as identity theft, and notes it can spread through viruses, Trojans, worms, spyware or adware. Trapdoors and backdoors allow unauthorized access to systems by bypassing authentication. Keyloggers record keystrokes to steal personal or financial information. Spoofing tricks networks by masquerading as a legitimate entity. Phishing uses fraudulent emails to steal information. Sniffing monitors network traffic to extract passwords and other data from packets. Port scanning identifies open ports that could enable unauthorized access. SQL injection allows interference with database queries and access to data.
Network security for E-Commerce
Network Security is the process of taking physical and software preventative measures to protect the underlying networking infrastructure from unauthorized access, misuse, malfunction, modification, destruction, or improper disclosure, thereby creating a secure platform for computers, users and programs to perform their permitted critical functions within a secure environment. - sans.org
Intruders
An intruder is defined as an unauthorized individual or program that enters a computer system. There are three main types of intruders: masqueraders who penetrate access controls using a legitimate user's account; misfeasors who are legitimate users that access unauthorized data or resources; and clandestine users who seize supervisory control to evade auditing. Intrusion detection aims to identify intruders quickly before damage occurs through monitoring techniques like analyzing audit records of user activity and system logs.
Hacking
This document summarizes information about computer security and hacking. It discusses how the internet has grown rapidly while security has lagged behind, allowing legions of hackers to emerge. It covers various types of computer crimes throughout history from the 1980s to 2000s involving viruses, financial theft, and denial of service attacks. The document also describes common hacking techniques like spoofing, session hijacking, buffer overflows, password cracking, and denial of service attacks. It emphasizes that computer security requires ongoing improvement as hackers become more sophisticated over time.
Cryptographic Security
The document discusses cryptographic security. It outlines security goals of confidentiality, integrity, and availability. It describes common security attacks like snooping, traffic analysis, modification, masquerading, replaying, denial of service, and their classification as passive or active. It also discusses security services like authentication, data confidentiality, data integrity, and nonrepudiation. Various security mechanisms are presented like encipherment, digital signatures, access control, and traffic padding that provide the security services and defend against different attacks. Basic concepts of cryptography like plaintext, ciphertext, ciphers, keys, encryption, and decryption are also introduced.
Security Controls Over E-Commerce
This document summarizes various security controls for e-commerce. It discusses controls to protect client computers like virus control, integrity control, and controlling access to illegitimate websites. It also discusses controls to protect the e-commerce channel, including encrypting transaction information to maintain privacy, using digital signatures to ensure integrity of transactional information is maintained, and making the channel available. Finally, it discusses controls to protect the e-commerce server, including access controls, encryption, firewalls, and intrusion detection systems.
Basic Security Chapter 1
This document discusses basic security concepts, including definitions of security, assets, and the principle of easiest penetration. It describes three classifications of protection: prevention, detection, and reaction. Examples are given for physical and cyber security. The goals of security are defined as integrity, confidentiality, and availability. Common security threats are interruption, interception, modification, and fabrication. Vulnerabilities in computing systems can occur in data, software, hardware, and exposed assets. Methods of defense include encryption, software/hardware controls, policies, and physical controls. System access control and data access control are important methods for making systems secure using identification, authentication, and access authorization.
Mobile security
This document summarizes security features and vulnerabilities across 2G, 3G, and 4G mobile networks. It discusses:
- Security elements in 2G networks like authentication, encryption, and vulnerabilities due to weak encryption algorithms and unsecured terminals.
- New security features in 3G networks like network authentication, explicit integrity checks, switch-based security, and flexibility to enhance security over time.
- 4G network security architecture focusing on network access, domain, user, and application security as well as visibility and configuration of security features.
- Key security risks in 4G like distributed networks, complex business models, and minimizing security spending. Preventative measures discussed include interoperability standards, security audits
Security Mechanisms
Vulnerabilities are weaknesses that attackers can exploit to gain unauthorized access to a network or its resources. Attacks are attempts to damage, access, or misuse assets without permission. Network security mechanisms detect, prevent, and recover from attacks using methods like routing control, traffic padding, encryption, access control, digital signatures, and ensuring data integrity.
Attack lecture #2 ppt
This document defines attacks and types of attacks on information security assets. It discusses passive attacks that obtain information without affecting systems, active attacks that change systems, and insider attacks from within an organization. Specific attack types described include phishing, hijacking, spoofing, buffer overflows, exploits, and password attacks using dictionaries, brute force, or hybrid methods.
network security
Network security consists of policies and practices to prevent unauthorized access to computer networks and resources. It involves authenticating users, typically with a username and password but also using additional factors like security tokens. Networks are subject to both passive attacks where an intruder intercepts data and active attacks where an intruder disrupts the network or conducts reconnaissance to access assets. Common network security concepts include authentication, types of attacks, and security management.
Chapter 1: Overview of Network Security
This document provides an overview of network security. It discusses security attacks like passive attacks (eavesdropping) and active attacks (modifying data). It outlines security services like confidentiality, authentication, integrity, non-repudiation, and access control. It also discusses methods of defense against attacks, including encryption, software/hardware controls, security policies, and physical controls. The document defines key security terms and concepts.
Security issues in e business
This document discusses various e-business security issues in cyberspace. It outlines basic security issues like authentication, authorization, confidentiality, integrity and non-repudiation. It also describes common security threats like denial of service attacks, unauthorized access, and theft/fraud. Finally, it explains different types of security techniques used like encryption, decryption, cryptography, virtual private networks, digital signatures, and digital certificates.
Cia security model
Just created a slideshare presentation giving a basic introduction to the Confidentiality, Integrity & Availability (CIA) Security Model. You can see more slideshows on http://www.slideshare.net/ImranahmedIT or visit my website: http://imran-ahmed.co.uk
Lect13 security
The document discusses computer system security. It explains that security requirements vary based on the operating environment. Security goals are defined by policies, while mechanisms are used to achieve those goals. Common security goals are secrecy, privacy, authenticity, and integrity of information. Both internal and external security threats are discussed, along with potential attacks like viruses, worms, and logic bombs. Methods of passive attacks like browsing and active attacks on message communications are also summarized. The importance of cryptography for secure communication is highlighted. Symmetric and asymmetric cryptosystems are compared for encrypting messages between systems.
Chapter 1 Introduction of Cryptography and Network security
(1) Cryptography and network security are important topics that involve terminology like plaintext, ciphertext, encryption, decryption, and cryptanalysis. (2) The document discusses principles of security like confidentiality, integrity, authentication, non-repudiation, and availability and how attacks can compromise them. (3) It also covers security services, mechanisms, and models in the OSI standard to enhance security and counter different types of security attacks.
Ppt.1
The document discusses the OSI security architecture, including security attacks, services, and mechanisms. It defines passive and active security attacks and lists examples. It also defines security services like authentication, access control, data confidentiality, data integrity, and nonrepudiation. Finally, it discusses security mechanisms like encipherment and the use of secret information shared between principals.
Information System Security introduction
The document defines information security and discusses its history and key concepts. It outlines the evolution of information security from physical security controls to modern approaches addressing confidentiality, integrity, and availability of information. Key aspects covered include definitions of security, the CIA triad/diamond models, cryptography, access control models, and digital signatures.
Computer security
This document provides an overview of computer security concepts. It discusses threats like viruses, worms, bots and rootkits that can compromise security. It defines key terms like assets, attacks, intruders and vulnerabilities. The CIA triad of confidentiality, integrity and availability is explained as the standard for information security. Common attacks are also outlined, such as password cracking, man-in-the-middle, spoofing and social engineering. Malware is defined and the characteristics of viruses, worms and trojans are described.
What's hot (20)
Chapter 1 Introduction of Cryptography and Network security
Chapter 1 Introduction of Cryptography and Network security
ย
Similar to Aspects of Network Security
information security (network security methods)
This document provides an overview of information security concepts. It discusses basic security principles like how no system is completely secure but security measures can reduce risks. It then summarizes key aspects of network security such as protecting systems through configuration, detection of issues, and rapid response. Common network security methods are outlined like access control, anti-malware tools, and firewalls. Goals of security like confidentiality, integrity and availability are defined in relation to the CIA triad model. Threats to these goals are also summarized.
Information security ist lecture
These slides contains Information Security first lecture with the contents of Network security and its methods
Network security unit 1,2,3
Computer Security : Introduction, Need for security, Principles of Security,
Types of Attacks
Cryptography : Plain text and Cipher Text, Substitution techniques, Caesar
Cipher, Mono-alphabetic Cipher, Polygram, Polyalphabetic Substitution,
Playfair, Hill Cipher, Transposition techniques, Encryption and Decryption,
Symmetric and Asymmetric Key Cryptography, Steganography, Key Range and
Key Size,
Possible Types of Attacks
Symmetric Key Algorithms and AES: Algorithms types and modes, Overview
of Symmetric key Cryptography, Data Encryption Standard (DES), International
Data Encryption Algorithm (IDEA), RC4, RC5, Blowfish, Advanced Encryption
Standard (AES)
Asymmetric Key Algorithms, Digital Signatures and RSA: Brief history of
Asymmetric Key Cryptography, Overview of Asymmetric Key Cryptography,
RSA algorithm, Symmetric and Asymmetric key cryptography together, Digital
Signatures, Knapsack Algorithm, Some other algorithms (Elliptic curve
cryptography, ElGamal, problems with the public key exchange)
security IDS
The CIA triangle outlines the three primary goals of information security: confidentiality, integrity, and availability. Confidentiality ensures that information is only available to authorized users, integrity ensures the accuracy and trustworthiness of information, and availability ensures that information is accessible when needed. These three principles form the basis of information security practices and help define how organizations should protect information assets from various threats.
Computer Security Chapter 1
This document provides an introduction to information security concepts. It defines information security as protecting information and systems from unauthorized access, use, disclosure, disruption or destruction. The key aspects of information security are confidentiality, integrity and availability. Basic security terminology like identification, authentication, access control and confidentiality are explained. Common network vulnerabilities like weak passwords, protocol design flaws, and unauthorized access through modems are also discussed. The importance of network security is to protect company assets, gain competitive advantage and ensure regulatory compliance.
CS PPT CHP 1 PART 1-Types of attacks and basics of computer security.pptx
The document provides an overview of key concepts in computer security. It discusses the CIA triad of confidentiality, integrity, and availability as fundamental security principles. It also defines common security threats like eavesdropping, masquerading, replay attacks, and denial-of-service attacks. Authentication, authorization, access control, accountability, and non-repudiation are presented as important security mechanisms. Denial-of-service attacks aim to disrupt systems by overloading them with requests to deny access to legitimate users.
Information Systems.pptx
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.
Security issue in e commerce
Security issue in e commerceBosco Technical Training Society, Don Bosco Technical School (Aff. GGSIP University, New Delhi)
Explain security issues and protection about unwanted threat in E-Commerce. Explain Security E-Commerce Environment. Security Threat in E-Commerce Environment.ย
attack vectors by chimwemwe.pptx
The document discusses computer security and common cyber attack vectors. It defines key terms like attack surface, attack vectors, and security breaches. It then describes 8 common attack vectors: compromised credentials, weak/stolen credentials, malicious insiders, missing/poor encryption, misconfiguration, ransomware, phishing, and trust relationships. Typical symptoms of an attack are also listed, such as slow performance, strange files/programs, and automatic messages. The consequences of a successful attack compromise the goals of computer security - confidentiality, integrity and availability.
Paper id 35201568
This document summarizes security issues and mechanisms related to online transactions. It discusses how online transactions work and outlines several common security threats like man-in-the-browser attacks, SQL injection, and phishing. It then describes security mechanisms used to protect online transactions, including biometrics, Secure Electronic Transactions protocol, anti-key logging technology, and WebPin technology. These security mechanisms aim to achieve goals like confidentiality, integrity, authentication and availability to make online transaction systems more secure.
Module 1.pptx
This document provides an introduction to network security. It discusses how computer data can be at risk when traveling between computers unless protected by cryptography. It defines computer security, network security, and internet security. Network security aims to ensure optimal machine functioning and restrict user access rights. Advantages include protecting client data and shared information. The document outlines security requirements like confidentiality, integrity, availability, and authentication. It also discusses challenges of security and provides an overview of the network security model and intrusion detection systems.
IMPLEMENTATION OF METHODS FOR TRANSACTION IN SECURE ONLINE BANKING
IMPLEMENTATION OF METHODS FOR TRANSACTION IN SECURE ONLINE BANKINGInternational Journal of Technical Research & Application
- Security is a concept similar to being cautious
or alert against any danger. Network security is the condition of
being protected against any danger or loss. Thus safety plays a
important role in bank transactions where disclosure of any data
results in big loss. We can define networking as the combination
of two or more computers for the purpose of resource sharing.
Resources here include files, database, emails etc. It is the
protection of these resources from unauthorized users that
brought the development of network security. It is a measure
incorporated to protect data during their transmission and also
to ensure the transmitted is protected and authentic.
Security of online bank transactions here has been
improved by increasing the number of bits while establishing the
SSL connection as well as in RSA asymmetric key encryption
along with SHA1 used for digital signature to authenticate the
userย
E commerce security 4
The document discusses e-commerce security, including threats and strategies to address them. It provides definitions of key concepts like authentication, non-repudiation, access control, and discusses specific threats like spoofing, man-in-the-middle attacks, and denial of service attacks. Security strategies mentioned include SSL/TLS, digital signatures, encryption, and authentication. The document is comprehensive in outlining the security dimensions, issues, threats, and technical approaches involved in securing e-commerce transactions and systems.
Security and Ethical Challenges Contributors Kim Wanders.docx
Security and Ethical Challenges
Contributors: Kim Wandersee, Les Pang
Computer Security
Computer Security Goals
Computer security must be viewed in a holistic manner and provide an end-to-end protection
as data moves through its lifecycle. Data originates from a user or sensor, passes over a
network to reach a computing system that hosts software. This computer system has software
and processes the data and stores in in a storage device. That data is backed up on a device
and finally archived. The elements that handle the data need to be secure. Computer security
pertains to all the means to protect the confidentiality, integrity, availability, authenticity,
utility, and possession of data throughout its lifecycle.
Confidentiality: A security principle that
works to ensure that data is not disclosed to
unauthorized persons.
Integrity: A security principle that makes sure
that information and systems are not
modified maliciously or accidentally.
Availability: A security principle that assures
reliable and timely access to data and
resources by authorized individuals.
Authenticity: A security principle that the
data, transactions, communications or
documents are genuine, valid, and not
fraudulent.
Utility: A security principle that addresses
that the information is usable for its intended
purpose. .
Possession: A security principle that works to
ensure that data remains under the control of
the authorized individuals.
Figure 1. Parkerian Hexad (PH) security model.
The Parerian Hexad (PH) model expands on the Confidentiality, Integrity, and Availability (CIA)
triad that has been the basic model of Information Security for over 20 years. This framework is
used to list all aspects of security at a basic level. It provides a complete security framework to
provide the means for information owners to protect their information from any adversaries
and vulnerabilities. It adds Authenticity, Utility, and Possession to CIA triad security model. It
addresses security aspects for data throughout its lifecycle.
The Center for Internet Security has identified 20 controls necessary to protect an organization
from known cyber-attack. The first 5 controls will provide effective defense against the most
common cyber-attacks, approximately 85% of attacks. The 5 controls are:
1. Inventory of Authorized and Devices
2. Inventory of Authorized and Unauthorized Software
3. Secure Configurations for Hardware and Software
4. Continuous Vulnerability Assessment and Remediation
5. Controlled User of Administrative Privileges
A full explanation of all 20 controls is available at the Center for Internet Security website.
Search for CIS controls.
Security Standards and Regulations
The National Institute of Standards and Technology (NIST), Computer Security Division, provides
security standards in its Federal Information Processing Standards (.
Security and Ethical Challenges Contributors Kim Wanders.docx
Security and Ethical Challenges
Contributors: Kim Wandersee, Les Pang
Computer Security
Computer Security Goals
Computer security must be viewed in a holistic manner and provide an end-to-end protection
as data moves through its lifecycle. Data originates from a user or sensor, passes over a
network to reach a computing system that hosts software. This computer system has software
and processes the data and stores in in a storage device. That data is backed up on a device
and finally archived. The elements that handle the data need to be secure. Computer security
pertains to all the means to protect the confidentiality, integrity, availability, authenticity,
utility, and possession of data throughout its lifecycle.
Confidentiality: A security principle that
works to ensure that data is not disclosed to
unauthorized persons.
Integrity: A security principle that makes sure
that information and systems are not
modified maliciously or accidentally.
Availability: A security principle that assures
reliable and timely access to data and
resources by authorized individuals.
Authenticity: A security principle that the
data, transactions, communications or
documents are genuine, valid, and not
fraudulent.
Utility: A security principle that addresses
that the information is usable for its intended
purpose. .
Possession: A security principle that works to
ensure that data remains under the control of
the authorized individuals.
Figure 1. Parkerian Hexad (PH) security model.
The Parerian Hexad (PH) model expands on the Confidentiality, Integrity, and Availability (CIA)
triad that has been the basic model of Information Security for over 20 years. This framework is
used to list all aspects of security at a basic level. It provides a complete security framework to
provide the means for information owners to protect their information from any adversaries
and vulnerabilities. It adds Authenticity, Utility, and Possession to CIA triad security model. It
addresses security aspects for data throughout its lifecycle.
The Center for Internet Security has identified 20 controls necessary to protect an organization
from known cyber-attack. The first 5 controls will provide effective defense against the most
common cyber-attacks, approximately 85% of attacks. The 5 controls are:
1. Inventory of Authorized and Devices
2. Inventory of Authorized and Unauthorized Software
3. Secure Configurations for Hardware and Software
4. Continuous Vulnerability Assessment and Remediation
5. Controlled User of Administrative Privileges
A full explanation of all 20 controls is available at the Center for Internet Security website.
Search for CIS controls.
Security Standards and Regulations
The National Institute of Standards and Technology (NIST), Computer Security Division, provides
security standards in its Federal Information Processing Standards ( ...
Introduction-to-Computer Network-Security.pptx
The "Introduction to Computer Network Security" presentation provides a comprehensive introduction to the fundamental concepts, principles, and practices of computer network security. This presentation is designed for students, professionals, and anyone interested in understanding the essentials of securing computer networks against various threats and vulnerabilities.
Computer system security and control-2.pptx
This document discusses computer system security and control. It outlines the objectives of information security as confidentiality, data integrity, and availability. It also describes various types of information security such as application security, cloud security, cryptography, and infrastructure security. Reasons why computer systems are vulnerable include increased access, disgruntled employees, complexity, cyber crimes, complacent management, and natural disasters. Controls to enhance security involve physical controls, access controls, backups, and administrative procedures.
cryptography introduction.pptx
Computer data can be vulnerable when traveling between computers. Cryptography transforms data using secret codes and modern mathematics, making it safer during transmission. It provides security by encrypting data to protect confidentiality and ensuring integrity and authentication of messages. Common security threats include passive attacks like eavesdropping and traffic analysis, as well as active attacks like masquerading, message modification, denial of service, and replays. Cryptography addresses these using techniques like symmetric and public key encryption.
Information security
Information security, sometimes shortened to InfoSec, is the practice of defending information from unauthorized access, use, disclosure, disruption, modification, perusal, inspection, recording or destruction. It is a general term that can be used regardless of the form the data may take (e.g. electronic, physical)
CNS - Chapter1
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.
Similar to Aspects of Network Security (20)
CS PPT CHP 1 PART 1-Types of attacks and basics of computer security.pptx
CS PPT CHP 1 PART 1-Types of attacks and basics of computer security.pptx
ย
IMPLEMENTATION OF METHODS FOR TRANSACTION IN SECURE ONLINE BANKING
IMPLEMENTATION OF METHODS FOR TRANSACTION IN SECURE ONLINE BANKING
ย
Security and Ethical Challenges Contributors Kim Wanders.docx
Security and Ethical Challenges Contributors Kim Wanders.docx
ย
Security and Ethical Challenges Contributors Kim Wanders.docx
Security and Ethical Challenges Contributors Kim Wanders.docx
ย
More from SHUBHA CHATURVEDI
Shell and its types in LINUX
Shells are programs that interpret commands from the user and translate them into a language computers understand. The main types of shells in Linux are the Bourne shell, C shell, Korn shell, and Bourne Again shell (bash). Bash has become the default shell in most Linux distributions as it incorporates features from other shells while maintaining compatibility with the Bourne shell syntax used for scripts.
Unix and its Components
The UNIX system consists of two main components: utilities/commands and the kernel. Utilities are programs that can be executed, like the date and who commands. Commands refer to programs and any arguments used to change their behavior. The kernel is the core of the operating system that manages resources and performs tasks like I/O, process, device, file, and memory management. It loads utilities into memory for execution and remains resident even when utilities are not running.
Linux Advantages and Disadvantages
Linux has several advantages such as being open source, having low costs, stability, network friendliness, performance, flexibility, security, fast and easy installation, compatibility, and multitasking. However, it also has some disadvantages like being difficult for beginners to learn, lacking certain software and games, and not supporting all hardware drivers.
Linux Features
Linux has several key features: it is portable and can run on different hardware; it is open source with freely available source code that can be collaboratively enhanced; it allows for multiprogramming by executing multiple applications simultaneously and is multi-user by allowing multiple users to access resources like memory at the same time. It also has a hierarchical file system, security features like access control and encryption, and a shell program for executing OS commands.
Architecture of Linux
The document discusses the architecture of the Linux operating system. It contains five main components: the kernel, system libraries, hardware layer, system utilities, and shell. The kernel is the core of the operating system that facilitates interactions between hardware and software. It connects applications to system hardware. The system libraries help applications access the kernel's features through system calls. System utilities provide specialized functions to users. The hardware layer refers to physical machine components like RAM and CPU. The shell acts as an interface between the kernel and user, running kernel functions and taking user commands.
Introduction and history of linux
Linux was created in 1991 by Linus Torvalds as a free and open-source kernel. It has since grown significantly and is now widely used both for personal computers and in other devices like servers, embedded systems, and smartphones through Android. Some key points in Linux's history include the first Linux distribution Red Hat in 1994, the creation of desktop environments like KDE in 1996, and Android's adoption of the Linux kernel which has given it the largest installed base of any OS. There are now over 600 Linux distributions available for different use cases like Ubuntu, Debian, and Fedora for personal computers and embedded distributions for devices.
Block Cipher and Operation Modes
Block cipher modes of operation describe how a block cipher can be used for encrypting messages larger than the cipher's block size. The document discusses the five main modes of operation - electronic codebook (ECB), cipher block chaining (CBC), cipher feedback (CFB), output feedback (OFB), and counter (CTR) mode. It provides details on how each mode works, including diagrams, as well as advantages and disadvantages of some of the modes.
Block Cipher and its Design Principles
This document discusses block ciphers, including their definition, structure, design principles, and avalanche effect. A block cipher operates on fixed-length blocks of bits and uses a symmetric key. It encrypts bits in blocks rather than one by one. Block ciphers have advantages like high diffusion but are slower than stream ciphers. They are built using the Feistel cipher structure with a number of rounds and keys. Important design principles for block ciphers include the number of rounds, design of the round function, and key schedule algorithm. The avalanche effect causes a small input change to result in a significant output change.
Stream Ciphers
This document discusses stream ciphers. It explains that stream ciphers encrypt one byte at a time, compared to block ciphers that encrypt around 128 bits at a time. A key is supplied to a pseudorandom number generator to produce a keystream. Encryption is done by XORing the plaintext and keystream bit-by-bit to produce ciphertext. Decryption reverses this process by XORing the ciphertext and keystream. Stream ciphers aim to make cryptanalysis more difficult by using long keystreams and including more 1s and 0s. They also require less code than block ciphers. Examples are given to encrypt plaintexts using a stream cipher.
Symmetric Key Algorithm
This document discusses symmetric-key algorithms and provides details on stream ciphers and block ciphers. Symmetric-key algorithms use the same key for encryption and decryption. Stream ciphers encrypt bits or characters one at a time using a pseudorandom generator, while block ciphers encrypt fixed-length blocks of bits at once. The document also notes that symmetric-key encryption requires both parties to share a secret key, unlike public-key encryption.
Product Cipher
This document discusses product ciphers, which combine substitution and transposition ciphers for stronger encryption. It provides an example of encrypting the plaintext "COMPUTER" using a two-step product cipher. First, substitution encryption is done using a 6x6 matrix. Then, transposition encryption is performed by rearranging the ciphertext columns according to a keyword. The document explains how to encrypt another plaintext "CRYPTOGRAPHY" using the same technique with a different keyword.
Transposition cipher techniques
Here are the solutions to the questions:
Q1. Rail Fence Cipher for "Networking" using 2 lines:
Nkttn
eorwige
Ciphertext: Nkttnorwige
Q2. Single columnar transposition for "COMPUTERSCIENCE" using keyword "ORANGE":
C O M P U T
E R S C I E N
C E
Ciphertext: COEMNPUSTIERC
Q3. Single columnar transposition for "COMPUTERSCIENCE" using keyword "PINEAPPLE":
C O M P U T
E R S C I E N
C E
Ciphertext
Polygraphic Substitution Cipher - Part 2
The document discusses polygraphic substitution ciphers and the Hill cipher. The Hill cipher is a polygraphic cipher that represents letters as numbers and encrypts blocks of text by multiplying them by a random key matrix. To decrypt, the cipher text is multiplied by the inverse of the key matrix. An example is given showing how a 3x3 key matrix is used to encrypt the plaintext "ACT" into ciphertext and then decrypt it back by multiplying the ciphertext by the inverse key matrix. The steps of encrypting a message using a Hill cipher are outlined.
Polygraphic Substitution Cipher -Part 1
The document discusses the Playfair cipher encryption method. It consists of generating a 5x5 key square using the keyword, with each letter appearing only once. To encrypt a pair of letters: if they are in the same column, take the letters below; if the same row, take the letters to the right; otherwise, take the letters at the opposite corners of the rectangle formed by the letters. An example is then provided to encrypt the plaintext "cryptography" using the keyword "playfair".
Homophonic Substitution Cipher
The document discusses two cipher techniques:
1) Homophonic substitution cipher where each plaintext letter can be replaced by multiple ciphertext letters. This makes it more difficult to break than a standard substitution cipher.
2) The Polybius square cipher which maps letters to numbers based on their coordinates in a 5x5 grid. An example is provided to encrypt the word "university".
Polyalphabetic Substitution Cipher
The document discusses various cipher techniques including polyalphabetic ciphers, the Vigenere cipher, homophonic substitution cipher, and the Polybius square. It provides examples of encrypting and decrypting messages using the Vigenere cipher and Polybius square. It also gives the formula for encrypting and decrypting messages using the Vigenere cipher algebraically by converting letters to numbers.
Monoalphabetic Substitution Cipher
Here is the cipher text using the Vigenere cipher with the given key and plaintext:
Ciphertext: "Sbkbtibn"
Q2. Decrypt the above cipher text:
Classical encryption techniques
1. There are two basic building blocks of encryption techniques: substitution and transposition.
2. Substitution involves replacing plaintext symbols like letters, numbers or bits with ciphertext symbols. Transposition rearranges the order of letters in the plaintext without changing them.
3. A product cipher combines both substitution and transposition ciphers, subjecting the output of one cipher to another encryption for greater security.
CLASSICAL ENCRYPTION TECHNIQUE- PART 1
Here is the cipher text using the Vigenere cipher with the given key and plaintext:
Ciphertext: "Sbkbtibn"
Q2. Decrypt the above cipher text:
CONVENTIONAL ENCRYPTION
Conventional Encryption, also known as symmetric encryption, uses the same key for both encryption and decryption. It has the following properties:
- The sender encrypts the plaintext using a secret key known to both sender and receiver.
- The encrypted data called ciphertext is transmitted to the receiver.
- The receiver decrypts the ciphertext using the same secret key to retrieve the original plaintext.
- It is a fast and simple encryption technique as it uses a single key. However, secure key distribution between communicating parties is a challenge.
- The encryption and decryption algorithms are reversible i.e. decrypting the ciphertext using the secret key reproduces the original plaintext.
- Popular symmetric encryption algorithms are AES
More from SHUBHA CHATURVEDI (20)
Recently uploaded
How to Manage Reception Report in Odoo 17
A business may deal with both sales and purchases occasionally. They buy things from vendors and then sell them to their customers. Such dealings can be confusing at times. Because multiple clients may inquire about the same product at the same time, after purchasing those products, customers must be assigned to them. Odoo has a tool called Reception Report that can be used to complete this assignment. By enabling this, a reception report comes automatically after confirming a receipt, from which we can assign products to orders.
Contiguity Of Various Message Forms - Rupam Chandra.pptx
Contiguity Of Various Message Forms - Rupam Chandra.pptx
THE SACRIFICE HOW PRO-PALESTINE PROTESTS STUDENTS ARE SACRIFICING TO CHANGE T...
The recent surge in pro-Palestine student activism has prompted significant responses from universities, ranging from negotiations and divestment commitments to increased transparency about investments in companies supporting the war on Gaza. This activism has led to the cessation of student encampments but also highlighted the substantial sacrifices made by students, including academic disruptions and personal risks. The primary drivers of these protests are poor university administration, lack of transparency, and inadequate communication between officials and students. This study examines the profound emotional, psychological, and professional impacts on students engaged in pro-Palestine protests, focusing on Generation Z's (Gen-Z) activism dynamics. This paper explores the significant sacrifices made by these students and even the professors supporting the pro-Palestine movement, with a focus on recent global movements. Through an in-depth analysis of printed and electronic media, the study examines the impacts of these sacrifices on the academic and personal lives of those involved. The paper highlights examples from various universities, demonstrating student activism's long-term and short-term effects, including disciplinary actions, social backlash, and career implications. The researchers also explore the broader implications of student sacrifices. The findings reveal that these sacrifices are driven by a profound commitment to justice and human rights, and are influenced by the increasing availability of information, peer interactions, and personal convictions. The study also discusses the broader implications of this activism, comparing it to historical precedents and assessing its potential to influence policy and public opinion. The emotional and psychological toll on student activists is significant, but their sense of purpose and community support mitigates some of these challenges. However, the researchers call for acknowledging the broader Impact of these sacrifices on the future global movement of FreePalestine.
INTRODUCTION TO HOSPITALS & AND ITS ORGANIZATION
The document discuss about the hospitals and it's organization .
A Visual Guide to 1 Samuel | A Tale of Two Hearts
These slides walk through the story of 1 Samuel. Samuel is the last judge of Israel. The people reject God and want a king. Saul is anointed as the first king, but he is not a good king. David, the shepherd boy is anointed and Saul is envious of him. David shows honor while Saul continues to self destruct.
Information and Communication Technology in Education
(๐๐๐ ๐๐๐) (๐๐๐ฌ๐ฌ๐จ๐ง 2)-๐๐ซ๐๐ฅ๐ข๐ฆ๐ฌ
๐๐ฑ๐ฉ๐ฅ๐๐ข๐ง ๐ญ๐ก๐ ๐๐๐ ๐ข๐ง ๐๐๐ฎ๐๐๐ญ๐ข๐จ๐ง:
Students will be able to explain the role and impact of Information and Communication Technology (ICT) in education. They will understand how ICT tools, such as computers, the internet, and educational software, enhance learning and teaching processes. By exploring various ICT applications, students will recognize how these technologies facilitate access to information, improve communication, support collaboration, and enable personalized learning experiences.
๐๐ข๐ฌ๐๐ฎ๐ฌ๐ฌ ๐ญ๐ก๐ ๐ซ๐๐ฅ๐ข๐๐๐ฅ๐ ๐ฌ๐จ๐ฎ๐ซ๐๐๐ฌ ๐จ๐ง ๐ญ๐ก๐ ๐ข๐ง๐ญ๐๐ซ๐ง๐๐ญ:
-Students will be able to discuss what constitutes reliable sources on the internet. They will learn to identify key characteristics of trustworthy information, such as credibility, accuracy, and authority. By examining different types of online sources, students will develop skills to evaluate the reliability of websites and content, ensuring they can distinguish between reputable information and misinformation.
BรI TแบฌP Bแป TRแปข TIแบพNG ANH LแปP 8 - Cแบข NฤM - FRIENDS PLUS - NฤM HแปC 2023-2024 (B...
BรI TแบฌP Bแป TRแปข TIแบพNG ANH LแปP 8 - Cแบข NฤM - FRIENDS PLUS - NฤM HแปC 2023-2024 (B...Nguyen Thanh Tu Collection
https://app.box.com/s/nrwz52lilmrw6m5kqeqn83q6vbdp8yzpย
How to Fix [Errno 98] address already in use
This slide will represent the cause of the error โ[Errno 98] address already in useโ and the troubleshooting steps to resolve this error in Odoo.
Educational Technology in the Health Sciences
Plenary presentation at the NTTC Inter-university Workshop, 18 June 2024, Manila Prince Hotel.
BPSC-105 important questions for june term end exam
BPSC-105 important questions for june term end exam
220711130100 udita Chakraborty Aims and objectives of national policy on inf...
Aims and objectives of national policy on information and communication technology(ICT) in school education in india
HYPERTENSION - SLIDE SHARE PRESENTATION.
IT WILL BE HELPFULL FOR THE NUSING STUDENTS
IT FOCUSED ON MEDICAL MANAGEMENT AND NURSING MANAGEMENT.
HIGHLIGHTS ON HEALTH EDUCATION.
skeleton System.pdf (skeleton system wow)
๐ฅ๐ฅ๐ฅ๐ฅ๐ฅ๐ฅ๐ฅ๐ฅ๐ฅ
โ โุฅุถุบ ุจูู ุฅูุฏููู
โู
ู ุฃููู ุงูู
ูุงุฒู
ุงูุชู ุตู
ู
ุชูุง
ู
ูุฒู
ุฉ ุชุดุฑูุญ ุงูุฌูุงุฒ ุงูููููู (ูุธุฑู 3)
๐๐๐๐๐๐๐๐๐๐
ุชุชู
ูุฒ ูุฐูู ุงูู
ูุฒู
ุฉ ุจุนูุฏุฉ ู
ูู
ูุฒุงุช :
1- ู
ูุชุฑุฌู
ุฉ ุชุฑุฌู
ุฉ ุชููุงุณุจ ุฌู
ูุน ุงูู
ุณุชููุงุช
2- ุชุญุชูู ุนูู 78 ุฑุณู
ุชูุถูุญู ููู ููู
ุฉ ู
ูุฌูุฏุฉ ุจุงูู
ูุฒู
ุฉ (ููู ููู
ุฉ !!!!)
#ููู
_ู
ุงูู_ุฏุฑุฎ
3- ุฏูุฉ ุงููุชุงุจุฉ ูุงูุตูุฑ ุนุงููุฉ ุฌุฏุงู ุฌุฏุงู ุฌุฏุงู
4- ูููุงูู ุจุนุถ ุงูู
ุนููู
ุงุช ุชู
ุชูุถูุญูุง ุจุดูู ุชูุตููู ุฌุฏุงู (ุชูุนุชุจุฑ ูุฏู ุงูุทุงูุจ ุฃู ุงูุทุงูุจุฉ ุจุฅููุง ู
ุนููู
ุงุช ู
ูุจูู
ุฉ ูู
ุน ุฐูู ุชู
ุชูุถูุญ ูุฐูู ุงูู
ุนููู
ุงุช ุงูู
ูุจูู
ุฉ ุจุดูู ุชูุตููู ุฌุฏุงู
5- ุงูู
ูุฒู
ุฉ ุชุดุฑุญ ููุณูุง ุจ ููุณูุง ุจุณ ุชููู ุชุนุงู ุงูุฑุงูู
6- ุชุญุชูู ุงูู
ูุฒู
ุฉ ูู ุงูู ุณูุงูุฏ ุนูู ุฎุงุฑุทุฉ ุชุชุถู
ู ุฌู
ูุน ุชูุฑูุนุงุช ู
ุนููู
ุงุช ุงูุฌูุงุฒ ุงูููููู ุงูู
ุฐููุฑุฉ ูู ูุฐูู ุงูู
ูุฒู
ุฉ
ูุงุฎูุฑุงู ูุฐูู ุงูู
ูุฒู
ุฉ ุญูุงูู ุนูููู
ูุฅุชู
ูู ู
ููู
ุฅู ุชุฏุนููู ุจุงูุฎูุฑ ูุงูุตุญุฉ ูุงูุนุงููุฉ ููุท
ูู ุงูุชูููู ุฒู
ูุงุฆู ูุฒู
ููุงุชู ุ ุฒู
ูููู
ู
ุญู
ุฏ ุงูุฐูุจู ๐๐
๐ฅ๐ฅ๐ฅ๐ฅ๐ฅ๐ฅ๐ฅ๐ฅ๐ฅ
NIPER 2024 MEMORY BASED QUESTIONS.ANSWERS TO NIPER 2024 QUESTIONS.NIPER JEE 2...
NIPER JEE PYQ
NIPER JEE QUESTIONS
MOST FREQUENTLY ASK QUESTIONS
NIPER MEMORY BASED QUWSTIONS
Andreas Schleicher presents PISA 2022 Volume III - Creative Thinking - 18 Jun...
Andreas Schleicher, Director of Education and Skills at the OECD presents at the launch of PISA 2022 Volume III - Creative Minds, Creative Schools on 18 June 2024.
220711130083 SUBHASHREE RAKSHIT Internet resources for social science
Internet resources for social science
Recently uploaded (20)
Contiguity Of Various Message Forms - Rupam Chandra.pptx
Contiguity Of Various Message Forms - Rupam Chandra.pptx
ย
THE SACRIFICE HOW PRO-PALESTINE PROTESTS STUDENTS ARE SACRIFICING TO CHANGE T...
THE SACRIFICE HOW PRO-PALESTINE PROTESTS STUDENTS ARE SACRIFICING TO CHANGE T...
ย
Information and Communication Technology in Education
Information and Communication Technology in Education
ย
BรI TแบฌP Bแป TRแปข TIแบพNG ANH LแปP 8 - Cแบข NฤM - FRIENDS PLUS - NฤM HแปC 2023-2024 (B...
BรI TแบฌP Bแป TRแปข TIแบพNG ANH LแปP 8 - Cแบข NฤM - FRIENDS PLUS - NฤM HแปC 2023-2024 (B...
ย
BPSC-105 important questions for june term end exam
BPSC-105 important questions for june term end exam
ย
220711130100 udita Chakraborty Aims and objectives of national policy on inf...
220711130100 udita Chakraborty Aims and objectives of national policy on inf...
ย
NIPER 2024 MEMORY BASED QUESTIONS.ANSWERS TO NIPER 2024 QUESTIONS.NIPER JEE 2...
NIPER 2024 MEMORY BASED QUESTIONS.ANSWERS TO NIPER 2024 QUESTIONS.NIPER JEE 2...
ย
Andreas Schleicher presents PISA 2022 Volume III - Creative Thinking - 18 Jun...
Andreas Schleicher presents PISA 2022 Volume III - Creative Thinking - 18 Jun...
ย
220711130083 SUBHASHREE RAKSHIT Internet resources for social science
220711130083 SUBHASHREE RAKSHIT Internet resources for social science
ย
Aspects of Network Security
- 1. 1 ASPECTS OF NETWORK SECURITY Prof. Neeraj Bhargava Mrs. Shubha Chaturvedi Department of Computer Science, School of Engineering & System Sciences MDS University Ajmer, Rajasthan
- 2. Aspects of Network Security:
- 3. 1. Privacy Privacy means both the sender and the receiver expects confidentiality. The transmitted message should be sent only to the intended receiver while the message should be opaque for other users. Only the sender and receiver should be able to understand the transmitted message as eavesdroppers can intercept the message. Therefore, there is a requirement to encrypt the message so that the message cannot be intercepted. This aspect of confidentiality is commonly used to achieve secure communication.
- 4. 2. Message Integrity โข Data integrity means that the data must arrive at the receiver exactly as it was sent. There transmission, either maliciously or accident, in a transit. As there are more and more monetary exchanges over the internet, data integrity is more crucial. The data integrity must be preserved i.e there must be no changes in the data content during secure communication.
- 5. 3. End-point authentication โข Authentication means that the receiver is sure of the senders identity, i.e.no imposter has sent the message .
- 6. Non-Repudiation Non-Repudiation means that the receiver must be able to prove that the received message has come from a specific sender. The sender must not deny sending a message that he or she send. The burden of proving the identity comes on the receiver. For example, if a customer sends a request to transfer the money from one account to another account, then the bank must have a proof that the customer has requested for the transaction.
- 7. Network Security Controls It consists of three different controls: 1.Physical 2.Technical 3.Administrative.
- 8. Physical Network Security Physical security controls are designed to prevent unauthorized personnel from gaining physical access to network components such as routers, cabling cupboards and so on. It protects from acquiring the control over the confidentiality of the network. Controlled access, such as locks, biometric authentication and other devices, is essential in any organization.
- 9. Physical Network Security Physical security controls are designed to prevent unauthorized personnel from gaining physical access to network components such as routers, cabling cupboards and so on. It protects from acquiring the control over the confidentiality of the network . Controlled access, such as locks, biometric authentication and other devices, is essential in any organization.
- 10. Technical Network Security Technical security controls protect data that is stored on the network or which is in transit across, into or out of the network. Protection is twofold; it needs to protect data and systems from unauthorized personnel, and it also needs to protect against malicious activities from employees.
- 11. Administrative Network Security This level of network security protects user behaviour like how the permission has been granted and how the authorization process takes place. This also ensures the level of sophistication the network might need for protecting it through all the attacks. This level also suggests necessary amendments that have to be done over the infrastructure.
- 12. To protect a system, we must take Security Measures at 4 levels LEVEL 1 : Physical : The site or sites containing the computer systems must be physically secured against entry by intruders. Both the machine rooms and the terminals or workstations that have access to the machines must be secured.
- 13. LEVEL 2 :Human Authorizing users must be done carefully to assure that only appropriate users have access to the system. Even authorized users, however, may be "encouraged" to let others use their access (in exchange for a bribe, for example). Phishing Dumpster Diving
- 14. LEVEL 3: Operating System The system must protect itself from accidental or purposeful security breaches. A runaway process could constitute an accidental denial-of-service attack. A query to a service could reveal passwords. A stack overflow could allow the launching of an unauthorized process. The list of possible breaches is almost endless. LEVEL 4: Network Much computer data in modern systems travels over private leased lines, shared lines like the Internet, wireless connections, or dial-up lines. Intercepting these data could be just as harmful as breaking into a computer; and interruption of communications could constitute a remote denial-of-service attack.
- 15. ASSIGNMENT Q1. Which is the most important aspects of security? Q2. What are the core components of security?