Week13
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Encryption converts data when exchanged digitally over networks so that others cannot access it, according to set regulations. A virtual private network (VPN) uses public circuits to connect enterprise networks between locations, suppressing costs compared to dedicated leased lines. A wide area network (WAN) connects computers using lines and leased lines. A firewall controls communication between an internal computer network and outside networks through hardware and software to maintain network security, blocking intrusions like a wall holds back fire.
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Week13
Encryption converts data when exchanged over networks so others cannot access it, using set regulations. A virtual private network uses public circuits to connect enterprise networks privately, like a leased line, at lower cost than physical lines. A wide area network connects computers using lines or leased lines. A firewall is hardware and software that controls communication between an internal network and outside to maintain security, blocking intrusions like a wall holds back fire.
Week13
Encryption converts data during network communication so that others cannot access it, according to set regulations. A virtual private network (VPN) uses a public circuit like a leased line to connect networks between locations like business sites, suppressing costs compared to a leased line. A wide area network (WAN) connects computers over lines and leased lines. A firewall is hardware and software that controls communication between a computer network and outside to maintain the internal network's security, analogous to a wall blocking a fire from spreading.
Week13
Encryption converts data during transmission to prevent unauthorized access. Virtual private networks (VPNs) allow secure connections between remote locations at a lower cost than dedicated lines. Wide area networks (WANs) connect computers over leased lines. Firewalls monitor network boundaries and block unauthorized external access to protect internal computer systems and data.
PROTOCOL MECHNISM FOR SECURITY ppt
This document discusses wireless sensor networks and network security. It defines what a wireless sensor network is and common applications. It then discusses protocols used for communication between nodes, including what they are, how they perform tasks, and their role in security. The document outlines various security threats like denial of service attacks, and mechanisms to protect against them, including cryptography, key management protocols, and encryption protocols. It emphasizes the importance of security protocols for wireless sensor networks.
Week13
File encryption encrypts and decrypts files on hard drives and removable media. Data encryption hides information and is a branch of mathematics and computer science related to information theory and computer security. Link encryption encrypts and decrypts all traffic at each end of a communications line, unlike end-to-end encryption where encryption only occurs between the sender and receiver. A virtual private network (VPN) allows for secure communications through open connections in a larger network by tunneling the link-layer protocols, though it does not necessarily include authentication or content encryption.
Transport layer security (tls)
Transport Layer Security (TLS) is the successor to Secure Sockets Layer (SSL) and ensures privacy and security between communicating applications on the internet. TLS encrypts data transmission, works with most browsers and servers, supports flexible encryption algorithms, and is easy to deploy on many systems transparently. It operates directly above TCP and establishes an encrypted connection by negotiating a cipher suite and exchanging certificates and keys between the client and server. Once handshake is complete, both sides can communicate securely until closing the connection. TLS version and cipher suite used can be viewed in browser.
Collaborative network security in multi tenant data center for cloud computing
Collaborative network security in multi tenant data center for cloud computing
IEEE PROJECTS 2014
-----------------------------------
Contact:+91-9994232214
:+91-8144199666
Email:ieeeprojectchennai@gmail.com
http://www.projectsieee.com
Support:
-------------
Projects Code
Documentation
PPT
Projects Video File
Projects Explaintion
Teamviewer Suppport
Week13
Encryption transforms information into an unreadable format using an algorithm and key. Link encryption encrypts all traffic between communication points. A firewall protects services on a computer from outside access while allowing internet use. A VPN creates a private computer network using virtual circuits over a larger public network like the internet instead of physical wires.
Recommended
Week13
Encryption converts data when exchanged over networks so others cannot access it, using set regulations. A virtual private network uses public circuits to connect enterprise networks privately, like a leased line, at lower cost than physical lines. A wide area network connects computers using lines or leased lines. A firewall is hardware and software that controls communication between an internal network and outside to maintain security, blocking intrusions like a wall holds back fire.
Week13
Encryption converts data during network communication so that others cannot access it, according to set regulations. A virtual private network (VPN) uses a public circuit like a leased line to connect networks between locations like business sites, suppressing costs compared to a leased line. A wide area network (WAN) connects computers over lines and leased lines. A firewall is hardware and software that controls communication between a computer network and outside to maintain the internal network's security, analogous to a wall blocking a fire from spreading.
Week13
Encryption converts data during transmission to prevent unauthorized access. Virtual private networks (VPNs) allow secure connections between remote locations at a lower cost than dedicated lines. Wide area networks (WANs) connect computers over leased lines. Firewalls monitor network boundaries and block unauthorized external access to protect internal computer systems and data.
PROTOCOL MECHNISM FOR SECURITY ppt
This document discusses wireless sensor networks and network security. It defines what a wireless sensor network is and common applications. It then discusses protocols used for communication between nodes, including what they are, how they perform tasks, and their role in security. The document outlines various security threats like denial of service attacks, and mechanisms to protect against them, including cryptography, key management protocols, and encryption protocols. It emphasizes the importance of security protocols for wireless sensor networks.
Week13
File encryption encrypts and decrypts files on hard drives and removable media. Data encryption hides information and is a branch of mathematics and computer science related to information theory and computer security. Link encryption encrypts and decrypts all traffic at each end of a communications line, unlike end-to-end encryption where encryption only occurs between the sender and receiver. A virtual private network (VPN) allows for secure communications through open connections in a larger network by tunneling the link-layer protocols, though it does not necessarily include authentication or content encryption.
Transport layer security (tls)
Transport Layer Security (TLS) is the successor to Secure Sockets Layer (SSL) and ensures privacy and security between communicating applications on the internet. TLS encrypts data transmission, works with most browsers and servers, supports flexible encryption algorithms, and is easy to deploy on many systems transparently. It operates directly above TCP and establishes an encrypted connection by negotiating a cipher suite and exchanging certificates and keys between the client and server. Once handshake is complete, both sides can communicate securely until closing the connection. TLS version and cipher suite used can be viewed in browser.
Collaborative network security in multi tenant data center for cloud computing
Collaborative network security in multi tenant data center for cloud computing
IEEE PROJECTS 2014
-----------------------------------
Contact:+91-9994232214
:+91-8144199666
Email:ieeeprojectchennai@gmail.com
http://www.projectsieee.com
Support:
-------------
Projects Code
Documentation
PPT
Projects Video File
Projects Explaintion
Teamviewer Suppport
Week13
Encryption transforms information into an unreadable format using an algorithm and key. Link encryption encrypts all traffic between communication points. A firewall protects services on a computer from outside access while allowing internet use. A VPN creates a private computer network using virtual circuits over a larger public network like the internet instead of physical wires.
12
This document describes a secure cloud storage system that uses erasure coding and threshold proxy re-encryption to allow data forwarding while maintaining security. The system encrypts, encodes, and distributes user data across multiple storage servers. It also allows users to securely forward their data to other users without retrieving it from the storage servers first. The proposal analyzes parameters for the number of data copies and storage servers queried to balance storage needs and robustness.
Gps4b
Encryption techniques are used to securely transmit data over networks. Pseudorandom noise adds statistical randomness to encrypted signals. Data encryption converts plaintext into unreadable ciphertext. Link encryption encrypts data as it is transmitted between network points. A virtual private network (VPN) uses encryption to create a secure connection over public lines like the internet and allow private network extension.
A depth detail about vpn security
This document provides an overview of virtual private network (VPN) security. It discusses what a VPN is and how it uses encryption and tunneling to securely transmit data over an insecure public network like the Internet. Common VPN tunneling technologies are described, including IPsec, PPTP, L2TP and SSL/TLS. Potential security risks of VPNs are outlined. The document also covers VPN deployment considerations and security best practices for remote access, intranet and extranet VPNs.
online game over cryptography
Cryptography involves encrypting data using mathematical algorithms and decrypting it back to plaintext. Encryption scrambles data into ciphertext while decryption returns it to readable text. Conventional cryptography uses a single key for both functions but public key cryptography uses different keys for encryption and decryption, eliminating the need to share secret keys. Hybrid cryptography combines the strengths of both by using asymmetric keys to distribute a symmetric session key for bulk encryption. Cryptanalysis aims to break secure communication while steganography hides messages within innocent-looking files like images and audio.
project 11
The document proposes a system to secure data in the cloud using decoy technology. It involves monitoring data access patterns and detecting abnormal behavior. When abnormal behavior is detected, the system launches a disinformation attack by providing the attacker with large amounts of fake decoy information. This is intended to protect users' real data by confusing attackers and preventing them from distinguishing real data from decoys.
HTTP vs HTTPS Difference
HTTP is a protocol for sending and receiving data between a web server and client like web browsers. It allows web pages and other files to be transferred but the data is not encrypted, so it can be viewed or intercepted by others. HTTPS encrypts this data transfer using SSL certificates to provide a secure connection and prevent sensitive information from being stolen. The main advantages of HTTPS are that it helps build trust, provides security, and qualifies websites for features like AMP pages.
English2
VPN uses encryption to securely connect private networks to the public internet. Key reflexive encryption uses unique identification numbers to encrypt specific applications. Link encryption devices encrypt data on a bit-by-bit basis when transmitting messages over communication lines. Firewalls control network access and communication to maintain internal network security.
Man in The Middle Attack
A man-in-the-middle (MITM) attack intercepts communications between two parties by relaying and controlling messages between them. The attacker eavesdrops and potentially modifies the communication by replacing the keys for their own. This allows them to intercept sensitive transmissions like passwords or financial transactions. A MITM works by spoofing the MAC address of the target to intercept and manipulate traffic between the target and other devices on the network, such as a router. Encrypted connections and careful certificate verification can help prevent MITM attacks.
Encrytion ppt
encryption is the process of encoding a message or information in such a way that only authorized parties can access it and those who are not authorized cannot. Encryption does not itself prevent interference but denies the intelligible content to a would-be interceptor.
Cryptography and attacks ins
The document defines different types of attacks on cryptography systems including passive and active attacks. Passive attacks attempt to learn information without affecting system resources, while active attacks try to alter system operations. The document also discusses cryptography, defining it as the practice of hiding information and converting plain text into unintelligible cipher text. Symmetric key cryptography uses a shared key for encryption and decryption, while asymmetric key cryptography uses public and private key pairs.
Towards a Security-aware Network Virtualization
This document proposes approaches for improving security in network virtualization. It identifies new security threats that can occur when networking resources are shared with untrusted parties and virtualized network equipment runs untrusted code. The document's proposed approaches are:
1) ELSSA (Extended Label Stream Switching Architecture), a base protocol that combines label forwarding and security protocols like MPLS and IPSec to allow recursive instances for network abstraction.
2) TASec (Traffic Analysis Security), which provides traffic analysis resistance through separate encryption of labels and payloads and an entangled encryption scheme with constant packet sizes, reducing overhead compared to onion routing.
3) The combination of ELSSA and TASec is proposed to meet
How Encryption Works
Encryption is used to encode information so that only those with the key can decode it, providing security for computers and information sent over the internet. There are two main types of encryption - symmetric key encryption where both sides use the same key, requiring the key to be installed on both computers beforehand, and public key encryption which addresses issues with symmetric key using a two-key system that allows encryption and decryption with different keys. A 1976 paper introduced public key encryption as an improvement over symmetric key encryption.
SmartLock
1) Traditional centralized access control schemes for IoT systems are vulnerable to hacking, allowing adversaries to pretend to be authorized users.
2) The document proposes using blockchain for distributed access control schemes to prevent adversaries from rewriting stored user data and to allow collective management of access rights.
3) A challenge is keeping data secret while leveraging blockchain, which makes data public. The system could be applied to smart locks for rental properties, allowing owners to securely grant digital keys to untrustworthy visitors.
fundamental of network security
Communication networks are used to transfer valuable and confidential information for a variety of purposes. As a consequence, they attract the attention of people who intend to steal or misuse information, or to disrupt or destroy the systems storing or communicating it.
Network communication devices
This document discusses different types of communication network devices including switches, hubs, modems, routers, and bridges. It provides information on how switches, modems, routers, and bridges work, and includes a short quiz with questions about switches versus hubs, whether switches are used for WANs, and if all computers connected to a switch receive data.
Communication & network devices
Computer communication involves the transfer of data, instructions, and information between sending and receiving devices using communication channels. It requires a sending device, receiving device, and transmission medium to connect them. Common computer communication methods include email, voice mail, fax, telecommuting, videoconferencing, and the Internet. Devices like modems, cables, routers, and switches facilitate communication over different network topologies.
Networking
The document discusses various topics related to computer networks including network topologies (star, ring, bus, peer-to-peer, client-server), physical and wireless transmission media (twisted pair cable, coaxial cable, fiber optic cable, infrared, radio waves, satellite), common network devices (NIC, hub, router, modem, access point), server types (file server, print server, email server, web server), network architectures (client-server, peer-to-peer), network operating systems, and advantages of computer networks such as sharing resources.
Lan, man and wan ppt final
A computer network connects autonomous computers that can exchange information. A local area network (LAN) connects computers within a small geographic area like a building using technologies like Ethernet. A metropolitan area network (MAN) extends across a city using technologies like fiber optics. A wide area network (WAN) connects computers across large geographic areas like countries using technologies like leased lines.
Introduction to computer network
A computer network is defined as the interconnection of two or more computers. It is done to enable the computers to communicate and share available resources.
Components of computer network
Network benefits
Disadvantages of computer network
Classification by their geographical area
Network classification by their component role
Types of servers
BASIC CONCEPTS OF COMPUTER NETWORKS
A computer network connects computers and devices together through communication devices and transmission media. It allows sharing of resources like printers, files, data and information. There are three main types of networks - local area networks (LANs) within a small geographical area, metropolitan area networks (MANs) within a city, and wide area networks (WANs) across large areas like countries. Network architecture refers to the overall design of a computer network and describes how it is configured and what strategies are used. The two main architectures are client/server, where a server provides services to clients, and peer-to-peer where all computers have equal capabilities without a central server.
Basic concepts of computer Networking
The document discusses different types of computer network topologies. It defines network topology as the physical configuration of cables, computers, and other devices on a network. The key network topologies covered are bus, ring, star, and mesh. Advantages and disadvantages of each topology are summarized.
Week13
Encryption converts digital data as it is exchanged over a network so that others cannot access it, ensuring secure communication. A virtual private network (VPN) allows secure connections over a public network as if using a private leased line at a lower cost. A wide area network (WAN) connects computers over long distances using lines and leased lines. A firewall controls communication between an internal network and outside sources, maintaining security through hardware and software that monitors incoming traffic like a wall against intrusions.
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This document describes a secure cloud storage system that uses erasure coding and threshold proxy re-encryption to allow data forwarding while maintaining security. The system encrypts, encodes, and distributes user data across multiple storage servers. It also allows users to securely forward their data to other users without retrieving it from the storage servers first. The proposal analyzes parameters for the number of data copies and storage servers queried to balance storage needs and robustness.
Gps4b
Encryption techniques are used to securely transmit data over networks. Pseudorandom noise adds statistical randomness to encrypted signals. Data encryption converts plaintext into unreadable ciphertext. Link encryption encrypts data as it is transmitted between network points. A virtual private network (VPN) uses encryption to create a secure connection over public lines like the internet and allow private network extension.
A depth detail about vpn security
This document provides an overview of virtual private network (VPN) security. It discusses what a VPN is and how it uses encryption and tunneling to securely transmit data over an insecure public network like the Internet. Common VPN tunneling technologies are described, including IPsec, PPTP, L2TP and SSL/TLS. Potential security risks of VPNs are outlined. The document also covers VPN deployment considerations and security best practices for remote access, intranet and extranet VPNs.
online game over cryptography
Cryptography involves encrypting data using mathematical algorithms and decrypting it back to plaintext. Encryption scrambles data into ciphertext while decryption returns it to readable text. Conventional cryptography uses a single key for both functions but public key cryptography uses different keys for encryption and decryption, eliminating the need to share secret keys. Hybrid cryptography combines the strengths of both by using asymmetric keys to distribute a symmetric session key for bulk encryption. Cryptanalysis aims to break secure communication while steganography hides messages within innocent-looking files like images and audio.
project 11
The document proposes a system to secure data in the cloud using decoy technology. It involves monitoring data access patterns and detecting abnormal behavior. When abnormal behavior is detected, the system launches a disinformation attack by providing the attacker with large amounts of fake decoy information. This is intended to protect users' real data by confusing attackers and preventing them from distinguishing real data from decoys.
HTTP vs HTTPS Difference
HTTP is a protocol for sending and receiving data between a web server and client like web browsers. It allows web pages and other files to be transferred but the data is not encrypted, so it can be viewed or intercepted by others. HTTPS encrypts this data transfer using SSL certificates to provide a secure connection and prevent sensitive information from being stolen. The main advantages of HTTPS are that it helps build trust, provides security, and qualifies websites for features like AMP pages.
English2
VPN uses encryption to securely connect private networks to the public internet. Key reflexive encryption uses unique identification numbers to encrypt specific applications. Link encryption devices encrypt data on a bit-by-bit basis when transmitting messages over communication lines. Firewalls control network access and communication to maintain internal network security.
Man in The Middle Attack
A man-in-the-middle (MITM) attack intercepts communications between two parties by relaying and controlling messages between them. The attacker eavesdrops and potentially modifies the communication by replacing the keys for their own. This allows them to intercept sensitive transmissions like passwords or financial transactions. A MITM works by spoofing the MAC address of the target to intercept and manipulate traffic between the target and other devices on the network, such as a router. Encrypted connections and careful certificate verification can help prevent MITM attacks.
Encrytion ppt
encryption is the process of encoding a message or information in such a way that only authorized parties can access it and those who are not authorized cannot. Encryption does not itself prevent interference but denies the intelligible content to a would-be interceptor.
Cryptography and attacks ins
The document defines different types of attacks on cryptography systems including passive and active attacks. Passive attacks attempt to learn information without affecting system resources, while active attacks try to alter system operations. The document also discusses cryptography, defining it as the practice of hiding information and converting plain text into unintelligible cipher text. Symmetric key cryptography uses a shared key for encryption and decryption, while asymmetric key cryptography uses public and private key pairs.
Towards a Security-aware Network Virtualization
This document proposes approaches for improving security in network virtualization. It identifies new security threats that can occur when networking resources are shared with untrusted parties and virtualized network equipment runs untrusted code. The document's proposed approaches are:
1) ELSSA (Extended Label Stream Switching Architecture), a base protocol that combines label forwarding and security protocols like MPLS and IPSec to allow recursive instances for network abstraction.
2) TASec (Traffic Analysis Security), which provides traffic analysis resistance through separate encryption of labels and payloads and an entangled encryption scheme with constant packet sizes, reducing overhead compared to onion routing.
3) The combination of ELSSA and TASec is proposed to meet
How Encryption Works
Encryption is used to encode information so that only those with the key can decode it, providing security for computers and information sent over the internet. There are two main types of encryption - symmetric key encryption where both sides use the same key, requiring the key to be installed on both computers beforehand, and public key encryption which addresses issues with symmetric key using a two-key system that allows encryption and decryption with different keys. A 1976 paper introduced public key encryption as an improvement over symmetric key encryption.
SmartLock
1) Traditional centralized access control schemes for IoT systems are vulnerable to hacking, allowing adversaries to pretend to be authorized users.
2) The document proposes using blockchain for distributed access control schemes to prevent adversaries from rewriting stored user data and to allow collective management of access rights.
3) A challenge is keeping data secret while leveraging blockchain, which makes data public. The system could be applied to smart locks for rental properties, allowing owners to securely grant digital keys to untrustworthy visitors.
fundamental of network security
Communication networks are used to transfer valuable and confidential information for a variety of purposes. As a consequence, they attract the attention of people who intend to steal or misuse information, or to disrupt or destroy the systems storing or communicating it.
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This document discusses different types of communication network devices including switches, hubs, modems, routers, and bridges. It provides information on how switches, modems, routers, and bridges work, and includes a short quiz with questions about switches versus hubs, whether switches are used for WANs, and if all computers connected to a switch receive data.
Communication & network devices
Computer communication involves the transfer of data, instructions, and information between sending and receiving devices using communication channels. It requires a sending device, receiving device, and transmission medium to connect them. Common computer communication methods include email, voice mail, fax, telecommuting, videoconferencing, and the Internet. Devices like modems, cables, routers, and switches facilitate communication over different network topologies.
Networking
The document discusses various topics related to computer networks including network topologies (star, ring, bus, peer-to-peer, client-server), physical and wireless transmission media (twisted pair cable, coaxial cable, fiber optic cable, infrared, radio waves, satellite), common network devices (NIC, hub, router, modem, access point), server types (file server, print server, email server, web server), network architectures (client-server, peer-to-peer), network operating systems, and advantages of computer networks such as sharing resources.
Lan, man and wan ppt final
A computer network connects autonomous computers that can exchange information. A local area network (LAN) connects computers within a small geographic area like a building using technologies like Ethernet. A metropolitan area network (MAN) extends across a city using technologies like fiber optics. A wide area network (WAN) connects computers across large geographic areas like countries using technologies like leased lines.
Introduction to computer network
A computer network is defined as the interconnection of two or more computers. It is done to enable the computers to communicate and share available resources.
Components of computer network
Network benefits
Disadvantages of computer network
Classification by their geographical area
Network classification by their component role
Types of servers
BASIC CONCEPTS OF COMPUTER NETWORKS
A computer network connects computers and devices together through communication devices and transmission media. It allows sharing of resources like printers, files, data and information. There are three main types of networks - local area networks (LANs) within a small geographical area, metropolitan area networks (MANs) within a city, and wide area networks (WANs) across large areas like countries. Network architecture refers to the overall design of a computer network and describes how it is configured and what strategies are used. The two main architectures are client/server, where a server provides services to clients, and peer-to-peer where all computers have equal capabilities without a central server.
Basic concepts of computer Networking
The document discusses different types of computer network topologies. It defines network topology as the physical configuration of cables, computers, and other devices on a network. The key network topologies covered are bus, ring, star, and mesh. Advantages and disadvantages of each topology are summarized.
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Week13
Encryption converts digital data as it is exchanged over a network so that others cannot access it, ensuring secure communication. A virtual private network (VPN) allows secure connections over a public network as if using a private leased line at a lower cost. A wide area network (WAN) connects computers over long distances using lines and leased lines. A firewall controls communication between an internal network and outside sources, maintaining security through hardware and software that monitors incoming traffic like a wall against intrusions.
Week13
Encryption converts data during transmission to prevent unauthorized access. Virtual private networks (VPNs) allow secure connections between remote locations at a lower cost than dedicated lines. Wide area networks (WANs) connect computers over leased lines. Firewalls monitor network boundaries and block unauthorized external access to protect internal computer systems and data.
The vpn
Virtual private networks (VPNs) allow organizations to securely connect to a private network over a shared public infrastructure like the Internet. VPNs work by encrypting data that is sent between devices so that it can only be read by the intended recipient. This creates a secure "tunnel" to transmit data privately across a public network. VPNs provide benefits like extending a private network's reach, improving security, and reducing costs compared to traditional private leased lines. However, VPNs still face security risks such as hacking attacks, weak user authentication, client-side vulnerabilities, and virus/malware infections that could compromise the private network.
Virtual Private Network (VPN).
Virtual private networks (VPNs) allow users to securely access a private network over a public network like the Internet. VPNs use tunneling, encryption, and authentication to provide security. Common VPN protocols include PPTP, L2TP, and IPsec. VPNs allow remote access for users and can connect multiple office sites through site-to-site VPNs. VPNs provide benefits like security, reliability, cost savings, and ability to connect globally but can have lower bandwidth and inconsistent performance compared to dedicated connections.
Virtual Private Network
Virtual private networks (VPNs) allow users to connect to a private network from a public network like the Internet. VPNs use encryption and other security mechanisms to ensure only authorized users can access the private network and data cannot be intercepted. There are different types of VPNs for both consumers and corporations, with the main ones being IPsec, PPTP, and L2TP protocols. Corporations commonly use VPNs for remote workers to securely access internal networks, while consumers use free VPN services for privacy and accessing censored websites when using public WiFi networks.
VIRTUAL PRIVATE NETWORKS BY SAIKIRAN PANJALA
Virtual private networks (VPNs) allow for secure data transmission over public networks like the Internet. VPNs create virtual tunnels between devices to securely transmit encrypted data. There are three main types of VPNs: remote-access VPNs for remote users, intranet-based site-to-site VPNs to connect locations within a company, and extranet-based site-to-site VPNs to connect companies. VPNs use protocols like IPsec and SSL to encrypt data and tunneling protocols to transmit data securely between devices.
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Virtual Private Network (VPN) allows users to securely access remote networks and resources as if they were locally connected. It works by encrypting data in transit and tunneling internet connections to maintain integrity and confidentiality. VPNs offer benefits like remote access to files/devices, connecting branch offices globally, and accessing restricted websites by changing the IP address. There are different types of VPN connections that use various encryption protocols at different layers. VPN services are an easy and flexible way for businesses and individuals to securely access networks from anywhere at any time on any device.
Running head SECURE VPN CONNECTIONS1SECURE VPN CONNECTION.docx
Running head: SECURE VPN CONNECTIONS 1
SECURE VPN CONNECTIONS 23
VPN Connections
Name
Institution
Abstract
Virtual Private Networks (VPNs) are beneficial to a company to create secure connections within, and remotely. However, establishing VPN is a complex task that requires making choices on what type of VPN and what VPN technologies to use. There are two types of VPN, but each type serves a different purpose. Further, establishing these types of VPNs require different hardware and software. Therefore, it is important to understand what is required for the type of VPN that one intends to establish. Above all, security is a major concern for VPNs. In addition to enjoying the benefits of VPN companies want to have their connection secure. This means ensuring data confidentiality so that the sent data is seen by the authorized users only. Data integrity defines that the data sent over the network is not altered or tampered with, and authentication entails users of the network to verify their identity. Different protocols provide different aspects of security. In addition, to set up a VPN one should choose the most appropriate protocol that offers the desired security elements. Therefore this paper explores VPN types, hardware and software required for the different types of VPNs and the VPN topologies. The paper starts with an introduction which is followed by a detailed discussion of VPN and the VPN types namely; the remote access VPN and the site to site VPN. VPN technologies continue within the paper and discusses how VPN meets the confidentiality, integrity and availability factors. Under the VPN technologies a more detailed discussion is provided for the IP Sec and GRE tunnelling and SSL VPN.
Table of Contents
Introduction 4
Virtual Private Networks 6
Site to Site VPN 7
Remote Access VPN 10
VPN Technologies 12
Generic Routing Encapsulation (GRE) 15
IPsec VPN 16
SSL VPN 20
Conclusion 21
References 23
Secure VPN ConnectionsIntroduction
The world is changing rapidly every day, more so in the technology industry. Businesses are now forced to cope with regional concerns in addition to their local ones. Many businesses are forced to consider the global markets and logistics. These organizations have established branches in different regions of the country or the world. Additionally, these companies need to be secure, fast, connected, and able to communicate effectively.
Until recently, communication between distant branches has been done using leased lines in a Wide Area Network (WAN) form of connection. Leased lines used have ranged from optical carrier-3 which has a speed of 155Mbps or ISDN with a speed of 144Kbps (Comer, 2015). These WAN networks have been advantageous in that the security, performance and reliability resulting in high proficiency. However, setting up and maintaining WAN networks over a large area using leased lines is expensive. Further, leased lines are not viable in terms of mobility .
Vpn
A VPN creates a secure connection over a public network like the Internet by using encryption, authentication, and tunneling. It allows remote users to securely access a private network. There are different VPN protocols like PPTP, L2TP, and IPsec that use encryption, encapsulation, and authentication to securely tunnel network traffic over the public Internet. VPNs can be used for remote access VPNs, intranet VPNs between offices, or extranet VPNs for partners and suppliers.
How Enryption for Strong Security Works
Encryption uses VPNs, WANs, routers, and firmware to securely transmit information over networks. A VPN creates a private network using open connections in a larger network instead of physical wires. A WAN is a wireless network that connects broad areas using routers and public communication links. Routers direct network traffic and information along different paths. Firmware is software installed directly into equipment to control hardware functions and exists as an intermediary between hardware and software.
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Describe the major types of VPNs and technologies, protocols, and services used to deploy VPNs. Also describe the business benefits of VPNs.
Solution
A virtual private network (VPN) is a technology that creates an encrypted connection over a less secure network. The benefit of using a VPN is that it ensures the appropriate level of security to the connected systems when the underlying network infrastructure alone cannot provide it. The justification for using a VPN instead of a private network usually boils down to cost and feasibility: It is either not feasible to have a private network (e.g., for a traveling sales rep) or it is too costly to do so. The most common types of VPNs are remote-access VPNs and site-to-site VPNs
A remote-access VPN uses a public telecommunication infrastructure like the Internet to provide remote users secure access to their organization\'s network. A VPN client on the remote user\'s computer or mobile device connects to a VPN gateway on the organization\'s network, which typically requires the device to authenticate its identity, then creates a network link back to the device that allows it to reach internal network resources (e.g., file servers, printers, intranets) as though it was on that network locally. A remote-access VPN usually relies on either IPsec or SSL to secure the connection, although SSL VPNs are often focused on supplying secure access to a single application rather than to the whole internal network. Some VPNs provide Layer 2access to the target network; these require a tunneling protocol like PPTP or L2TP running across the base IPsec connection.
A site-to-site VPN uses a gateway device to connect the entire network in one location to the network in another, usually a small branch connecting to a data center. End-node devices in the remote location do not need VPN clients because the gateway handles the connection. Most site-to-site VPNs connecting over the Internet use IPsec. It is also common to use carrier MPLS clouds rather than the public Internet as the transport for site VPNs. Here, too, it is possible to have either Layer 3 connectivity (MPLS IP VPN) or Layer 2 (Virtual Private LAN Service, or VPLS) running across the base transport.
VPNs can also be defined between specific computers, typically servers in separate data centers, when security requirements for their exchanges exceed what the enterprise network can deliver. Increasingly, enterprises also use VPNs in either remote-access mode or site-to-site mode to connect (or connect to) resources in a public infrastructure as a service environment. Newer hybrid-access scenarios put the VPN gateway itself in the cloud, with a secure link from the cloud service provider into the internal network.
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It Infrastructure Management PPT Centurion University of Technology And Manag...
It Infrastructure Management PPT Centurion University of Technology And Manag...Centurion University of Technology and Management Odisha (Paralakhemundi)
This document summarizes information about virtual private networks (VPNs). It defines a VPN as a secure connection between devices and networks over public networks like the Internet. It describes the main types of VPNs and how they work by encrypting data and routing it through a service provider's secure servers. The document also discusses VPN security methods like firewalls and encryption. It outlines advantages like reduced costs but also disadvantages such as loss of access if the connection is down. Finally, it predicts continued growth in VPN usage and markets in the future.The Virtual Private Network
VPN allows organizations to connect remote sites and users over a shared public network while maintaining privacy and security. It uses encryption, authentication, and tunneling protocols to create a secure connection between devices. VPNs can extend an organization's intranet to remote offices, partners, suppliers and customers. They reduce costs compared to dedicated private networks. However, VPNs still face security risks from hacking attacks, weak authentication, client-side vulnerabilities, and malware infections that could compromise the private network. Proper firewalls, encryption, authentication and other security measures are needed to ensure VPN safety.
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Research Inventy : International Journal of Engineering and Science is published by the group of young academic and industrial researchers with 12 Issues per year. It is an online as well as print version open access journal that provides rapid publication (monthly) of articles in all areas of the subject such as: civil, mechanical, chemical, electronic and computer engineering as well as production and information technology. The Journal welcomes the submission of manuscripts that meet the general criteria of significance and scientific excellence. Papers will be published by rapid process within 20 days after acceptance and peer review process takes only 7 days. All articles published in Research Inventy will be peer-reviewed.
IRJET- A Survey of Working on Virtual Private Networks
This document provides an overview of virtual private networks (VPNs). It discusses VPN architecture, including remote access VPNs that allow single users to connect from remote locations, and site-to-site VPNs that connect two private networks. The document explains how VPNs work by encrypting data packets and encapsulating them within IP packets to allow transmission over the public internet in a secure manner. Key advantages of VPNs are lower costs compared to leased lines and scalability to connect multiple office locations.
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This document summarizes key components of network security: firewalls block unauthorized access while allowing authorized communications; routers relay data between networks and filter unauthorized protocols; WANs connect LANs and other networks across broad areas; and VPNs use public lines to connect company networks privately and securely as if they were dedicated private lines.
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- 3. Virtual Private Network(VPN) Public circuit..completely..lease line..as if..use..service.It is used for the connection of the network in the enterprise between bases etc. , and the cost is suppressed to the introduction of the lease line.