Week13
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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.
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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 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.
How Encryption for Strong Security Works
File, data, and link encryption as well as VPNs are described. File encryption encrypts files to protect them from being read or altered without a key. Data encryption hides data from other users by encoding it using a key into a pseudorandom stream. Link encryption encrypts all traffic at each end of a communications line. A VPN allows communication between systems using an existing shared network infrastructure.
Week13
This document discusses different types of encryption and security measures including data encryption which converts plaintext to ciphertext, file encryption which protects files, link encryption which encrypts data as it is transmitted, VPN which allows users to use public networks privately, and firewalls which control communication between private and external networks.
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.
Poster-A4
This document outlines a graduation project to understand how public WANs work, research routing protocols and IPsec, implement an IPsec VPN over a simulated WAN topology, and analyze secure and unsecure TCP streams. The project will use GNS3 to emulate Cisco IOS and create a graphical network simulator combining virtual and real environments, along with Wireshark for network analysis and troubleshooting. The abstract indicates that securing VPN tunnels is important for organizations using public networks, and that IPsec is a key protocol for achieving security goals when connecting over WAN links.
Transport mode virtual private network(vpn)
Virtual private networks (VPNs) provide a secure connection over public networks by encrypting data transmission. VPNs use encryption and authentication to securely transmit data across unsecured networks like the internet. There are two main types of VPNs - transport mode VPNs encrypt only the data portion of network packets, while tunnel mode VPNs encrypt the entire client packet.
Web Presen
File encryption scrambles files to make them unreadable without decryption. Link encryption encrypts traffic at each end of a communication line, unlike end-to-end encryption which only encrypts at the origin and destination. A WAN is a wireless network that connects across boundaries like regions or countries, using routers and public links. A VPN tunnels links between nodes through a larger network like the internet, allowing secure communication without explicit security features in the virtual network itself.
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 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.
How Encryption for Strong Security Works
File, data, and link encryption as well as VPNs are described. File encryption encrypts files to protect them from being read or altered without a key. Data encryption hides data from other users by encoding it using a key into a pseudorandom stream. Link encryption encrypts all traffic at each end of a communications line. A VPN allows communication between systems using an existing shared network infrastructure.
Week13
This document discusses different types of encryption and security measures including data encryption which converts plaintext to ciphertext, file encryption which protects files, link encryption which encrypts data as it is transmitted, VPN which allows users to use public networks privately, and firewalls which control communication between private and external networks.
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.
Poster-A4
This document outlines a graduation project to understand how public WANs work, research routing protocols and IPsec, implement an IPsec VPN over a simulated WAN topology, and analyze secure and unsecure TCP streams. The project will use GNS3 to emulate Cisco IOS and create a graphical network simulator combining virtual and real environments, along with Wireshark for network analysis and troubleshooting. The abstract indicates that securing VPN tunnels is important for organizations using public networks, and that IPsec is a key protocol for achieving security goals when connecting over WAN links.
Transport mode virtual private network(vpn)
Virtual private networks (VPNs) provide a secure connection over public networks by encrypting data transmission. VPNs use encryption and authentication to securely transmit data across unsecured networks like the internet. There are two main types of VPNs - transport mode VPNs encrypt only the data portion of network packets, while tunnel mode VPNs encrypt the entire client packet.
Web Presen
File encryption scrambles files to make them unreadable without decryption. Link encryption encrypts traffic at each end of a communication line, unlike end-to-end encryption which only encrypts at the origin and destination. A WAN is a wireless network that connects across boundaries like regions or countries, using routers and public links. A VPN tunnels links between nodes through a larger network like the internet, allowing secure communication without explicit security features in the virtual network itself.
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.
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
Cys Report Krack Attack Threat Briefing
Review of the WPA2 Krack Attack. The full research paper that the presentation is based on can be downloaded from here: https://www.krackattacks.com/. You can find my podcast on the iTunes Store CYSReport https://cysreport.com, and my blog is https://debinfosec.com.
Eng12
Encryption works by using keys to scramble information being sent over the internet so that it can only be read by the intended recipient. There are two main types of encryption: symmetric key encryption which uses the same secret key shared between computers, and public key encryption which uses a public key available to anyone and a private key only known to the recipient. Popular implementations of public key encryption include SSL and TLS which are used to securely transmit sensitive information over the internet in browsers and between websites and servers. Hashing algorithms are also used to generate keys by computing a hash value summary from an input number that cannot be reversed without the original data.
Week13 Presen
Encryption uses a numeric key to encrypt files and data transmitted across networks like VPNs. The key combines the real data with pseudorandom noise, protecting the real content. At the destination, the same key is used to decrypt the data and remove the noise to retrieve the original real content.
Rootconf2019
This document discusses TLS 1.3 and its improvements over older TLS versions. It notes that TLS 1.3 aims to address security flaws in previous versions by designing the protocol from the ground up with security in mind. TLS 1.3 improves performance through faster handshakes and session resumptions. It also improves security by removing insecure crypto algorithms, adding new security features, and preventing downgrade attacks. Major TLS libraries like OpenSSL, NSS, and GnuTLS now support TLS 1.3.
Week13presen
Data encryption standard uses DES algorithm to encrypt data in 64-bit blocks using a 56-bit key. File encryption securely encrypts files to keep sensitive information private and makes encrypted files unreadable until decrypted. Link encryption encrypts and decrypts all traffic at each end of a communications line. A virtual private network creates a private computer network using public internet connections.
Encryption
Encryption encodes information to protect it from unauthorized access. It involves two processes - encryption scrambles the information using an algorithm, while decryption reverses the process to restore the original information. There are two main methods: symmetric key encryption uses the same key to encrypt and decrypt, while asymmetric key encryption uses separate public and private keys.
VPN vs. PROXY
This document compares proxies and VPNs. Proxies act as intermediaries between a user's device and the internet and do not encrypt traffic, while VPNs create an encrypted tunnel protecting a user's online activity and hiding their IP address. The document outlines the advantages and disadvantages of HTTP, SOCKS, and various VPN protocols. It concludes that while proxies are cheaper, VPNs provide superior anonymity and security by encrypting all internet activity.
What is VPN?
This document discusses how organizations use the internet to connect with customers and between branches. It notes that while the internet provides easy access, it also opens up security risks if sensitive data is transmitted without protection. To address this, the document recommends using a virtual private network (VPN) to securely transmit data between branches over the internet. A VPN encrypts and protects data so that only the intended recipient can understand it, ensuring privacy and integrity of the transmitted information.
Encryption
Encryption is a process that converts plain text into cipher text using an encryption algorithm. There are two main types: symmetric encryption which uses a shared secret key for encryption and decryption, and asymmetric encryption which uses a public/private key pair. While symmetric encryption is faster, asymmetric encryption is more secure as the private key is never shared. Encryption is used to provide authentication, privacy, accountability, integrity and security for data across various applications such as e-commerce, banking, defense services and more.
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.
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.
Lesson 1- Foundation of Cryptology
The document provides an overview of cryptography and cryptanalysis. It discusses the history and foundations of cryptology, including definitions of key terms. Symmetric and asymmetric encryption algorithms are described, such as DES, AES, RSA, and their uses of secret or public keys. The importance of key size for encryption strength is also noted. Cryptographic methods like substitution, transposition, XOR, Vernam, and hash ciphers are outlined.
cryptography security
This document provides an introduction to cryptography, including definitions, security attacks, objectives of information security, and types of cryptographic functions. It describes secret key cryptography, where a single key is used for encryption and decryption, and public key cryptography, where each individual has two keys - a private key and public key. It also discusses hash functions and how they are used for password hashing, message integrity, message fingerprints, and download security.
Symmetric and Asymmetric Encryption
Symmetric and asymmetric encryption are two methods used to secure information online. Symmetric encryption uses a shared private key between sender and receiver, while asymmetric encryption uses a public/private key pair. Symmetric encryption is simpler but asymmetric is more secure as private keys are not shared. Modern encryption often uses a combination of both methods, with symmetric encryption for bulk data and asymmetric to securely exchange the symmetric keys. Encryption techniques continue to evolve with new algorithms to outpace cyber criminals trying to access protected information.
Encryption
It is about Encryption like Symmetric, Asymmetric and Hashing and what are these, how are these working and what are differences exist among these.
Building an IOT app using MQTT
Presented by Bluemix Developer Advocate, Ryan Baxter.
MQTT is a standards-based, lightweight pub/sub messaging protocol ideal for Internet of Things use cases. With implementations in a number of different languages, using MQTT in your applications is simple and straightforward. Ryan Baxter shows how to build an application that connects to an MQTT broker and can receive data from—and issue commands to—a number of different IoT devices.
Topics include:
An overview of MQTT
The different types of messages you can send through an MQTT broker
How to send messages securely through the broker
How you can use MQTT to perform device management
Scalability concerns (how many devices the broker can handle and at what frequency you can send messages)
Ryan will also focus on the cloud. Since the typical scale of IoT applications often requires the cloud, Ryan shows how cloud-based MQTT solutions can make building IoT apps even easier.
Manipal Cure and Care
This document discusses various celebrations and events held at different centres and offices of a company. Employees had fun celebrations for ZEST 08 at centres in Pune, Koramangla, Bandra, and Andheri. There were also ethnic day and dance/rangoli competitions at the corporate office. Cricket tournament winners were acknowledged. The document highlights unity and diversity within the company.
All I Want To Do
The document is a song about wanting to fully give one's life, heart, and will over to God. It repeats verses expressing the desire to surrender everything and let God's will be done, until doing God's will is all the singer wants to do.
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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.
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
Cys Report Krack Attack Threat Briefing
Review of the WPA2 Krack Attack. The full research paper that the presentation is based on can be downloaded from here: https://www.krackattacks.com/. You can find my podcast on the iTunes Store CYSReport https://cysreport.com, and my blog is https://debinfosec.com.
Eng12
Encryption works by using keys to scramble information being sent over the internet so that it can only be read by the intended recipient. There are two main types of encryption: symmetric key encryption which uses the same secret key shared between computers, and public key encryption which uses a public key available to anyone and a private key only known to the recipient. Popular implementations of public key encryption include SSL and TLS which are used to securely transmit sensitive information over the internet in browsers and between websites and servers. Hashing algorithms are also used to generate keys by computing a hash value summary from an input number that cannot be reversed without the original data.
Week13 Presen
Encryption uses a numeric key to encrypt files and data transmitted across networks like VPNs. The key combines the real data with pseudorandom noise, protecting the real content. At the destination, the same key is used to decrypt the data and remove the noise to retrieve the original real content.
Rootconf2019
This document discusses TLS 1.3 and its improvements over older TLS versions. It notes that TLS 1.3 aims to address security flaws in previous versions by designing the protocol from the ground up with security in mind. TLS 1.3 improves performance through faster handshakes and session resumptions. It also improves security by removing insecure crypto algorithms, adding new security features, and preventing downgrade attacks. Major TLS libraries like OpenSSL, NSS, and GnuTLS now support TLS 1.3.
Week13presen
Data encryption standard uses DES algorithm to encrypt data in 64-bit blocks using a 56-bit key. File encryption securely encrypts files to keep sensitive information private and makes encrypted files unreadable until decrypted. Link encryption encrypts and decrypts all traffic at each end of a communications line. A virtual private network creates a private computer network using public internet connections.
Encryption
Encryption encodes information to protect it from unauthorized access. It involves two processes - encryption scrambles the information using an algorithm, while decryption reverses the process to restore the original information. There are two main methods: symmetric key encryption uses the same key to encrypt and decrypt, while asymmetric key encryption uses separate public and private keys.
VPN vs. PROXY
This document compares proxies and VPNs. Proxies act as intermediaries between a user's device and the internet and do not encrypt traffic, while VPNs create an encrypted tunnel protecting a user's online activity and hiding their IP address. The document outlines the advantages and disadvantages of HTTP, SOCKS, and various VPN protocols. It concludes that while proxies are cheaper, VPNs provide superior anonymity and security by encrypting all internet activity.
What is VPN?
This document discusses how organizations use the internet to connect with customers and between branches. It notes that while the internet provides easy access, it also opens up security risks if sensitive data is transmitted without protection. To address this, the document recommends using a virtual private network (VPN) to securely transmit data between branches over the internet. A VPN encrypts and protects data so that only the intended recipient can understand it, ensuring privacy and integrity of the transmitted information.
Encryption
Encryption is a process that converts plain text into cipher text using an encryption algorithm. There are two main types: symmetric encryption which uses a shared secret key for encryption and decryption, and asymmetric encryption which uses a public/private key pair. While symmetric encryption is faster, asymmetric encryption is more secure as the private key is never shared. Encryption is used to provide authentication, privacy, accountability, integrity and security for data across various applications such as e-commerce, banking, defense services and more.
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.
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.
Lesson 1- Foundation of Cryptology
The document provides an overview of cryptography and cryptanalysis. It discusses the history and foundations of cryptology, including definitions of key terms. Symmetric and asymmetric encryption algorithms are described, such as DES, AES, RSA, and their uses of secret or public keys. The importance of key size for encryption strength is also noted. Cryptographic methods like substitution, transposition, XOR, Vernam, and hash ciphers are outlined.
cryptography security
This document provides an introduction to cryptography, including definitions, security attacks, objectives of information security, and types of cryptographic functions. It describes secret key cryptography, where a single key is used for encryption and decryption, and public key cryptography, where each individual has two keys - a private key and public key. It also discusses hash functions and how they are used for password hashing, message integrity, message fingerprints, and download security.
Symmetric and Asymmetric Encryption
Symmetric and asymmetric encryption are two methods used to secure information online. Symmetric encryption uses a shared private key between sender and receiver, while asymmetric encryption uses a public/private key pair. Symmetric encryption is simpler but asymmetric is more secure as private keys are not shared. Modern encryption often uses a combination of both methods, with symmetric encryption for bulk data and asymmetric to securely exchange the symmetric keys. Encryption techniques continue to evolve with new algorithms to outpace cyber criminals trying to access protected information.
Encryption
It is about Encryption like Symmetric, Asymmetric and Hashing and what are these, how are these working and what are differences exist among these.
Building an IOT app using MQTT
Presented by Bluemix Developer Advocate, Ryan Baxter.
MQTT is a standards-based, lightweight pub/sub messaging protocol ideal for Internet of Things use cases. With implementations in a number of different languages, using MQTT in your applications is simple and straightforward. Ryan Baxter shows how to build an application that connects to an MQTT broker and can receive data from—and issue commands to—a number of different IoT devices.
Topics include:
An overview of MQTT
The different types of messages you can send through an MQTT broker
How to send messages securely through the broker
How you can use MQTT to perform device management
Scalability concerns (how many devices the broker can handle and at what frequency you can send messages)
Ryan will also focus on the cloud. Since the typical scale of IoT applications often requires the cloud, Ryan shows how cloud-based MQTT solutions can make building IoT apps even easier.
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All I Want To Do
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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 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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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 private networks securely as if they were dedicated private lines. It provides references for further information.
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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.
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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.
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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.
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.
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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.
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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 .
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This content has been created mainly for the students who would like to understand the basics of the VPN and its 5W1H
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.
Virtual Private Networks (VPN) ppt
Virtual Private Network is a type of private network that uses public telecommunicaton, such as the Internet, instead of leased lines to communicate
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- The document discusses using vector quantization and k-means clustering to create a codebook for image retrieval. Images are divided into 8x8 pixel blocks and each block is assigned a code from the codebook to create feature vectors for the images.
- Feature vectors for 10 facial images were extracted and the distances between vectors were calculated. The shortest distance was between images of the same person with and without glasses, showing the method can accurately retrieve similar images.
- Future work proposed modifying the method to remove backgrounds before feature extraction, using different block sizes, and exploring support vector machines for multimedia retrieval.
The literature review
The document provides tips on conducting a literature review. It explains that a literature review surveys published work on a topic to establish existing knowledge and debates. It should be organized around a research question or thesis and synthesize findings. The review develops skills in information seeking and critical analysis. It identifies what is known and still unknown, and areas of controversy to suggest further research questions.
Week14
The document defines and describes four technologies: PVR (personal video recorder), GM (General MIDI), WiFi, and MP3. PVR is a digital video recorder that uses a hard disk instead of videotape. GM is a MIDI standard that more strictly defines data meaning. WiFi is a brand name that certifies wireless LAN interconnectivity. MP3 is an audio compression method used in MPEG-1 that is widely used.
Week12
Traffic moves over the Internet through a series of connections: a PDA connects to a POP, which connects to an ISP router, which routes data between networks. POPs allow users to connect to the Internet and remotely access servers. ISPs connect customers through various connection lines and provide additional services like data storage and original content. Routers relay data flowing on networks to other networks, with multi-protocol routers supporting multiple protocols.
Week11
This document discusses several digital network technologies: ISDN provides digital lines for packet and circuit-switched data communication; LANs connect computers and printers within a building via cables; TCP is an Internet standard protocol that operates at the transport layer above IP at the network layer to mediate communication between layers. IP addresses distinguish systems on a network with a network part and host part separated by a subnet mask.
Week10
This document discusses how network management systems work using SNMP, a network management system, MIB, and UPS. SNMP is a protocol that allows network devices to communicate information that can be used to monitor and control devices on an IP network. A network management system is software and hardware that manages networks by monitoring for issues, outages, security threats and traffic using information from MIBs. MIBs contain information about networking devices that is accessible to outside systems using SNMP. UPS devices provide backup battery power to computers during power outages to allow for safe shutdown.
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Week13
- 1. How Encryption for Strong Security Works ● EncryptionEncryption ● VPNVPN ● WANWAN ● FIREWALLFIREWALL
- 2. Encryption ● When you exchange digital data through the network, convert data so that others do not steal a glance while communicating and it is falsified according to set regulatios.
- 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.
- 4. What is WAN ? ● Abbreviation of "Wide Area Network". ● The line and the lease line are used. ● The computer is connected mutually.
- 5. FIREWALL ● I control a particular computer network and communication with the outside, and the fire wall (a fire wall) is hardware equipped with software aimed at maintaining the security of the internal computer network or the software. I compare the cracking act that is going to invade from the outside an internal computer network to a fire and use expression called the fire wall as a thing checking it.