Nt1310 Unit 3 Elements Of VPN

The internet layer is built up of four core protocols: IP, IGMP, ICMP and ARP. Internet protocol (IP) is responsible for routing, IP addressing and breakdown/reassembly of data packets, address resolution protocol (ARP) is responsible for mapping an IP address to a device on the local network, internet control message protocol (ICMP) provides diagnostic information and error reports on lost packets, internet group management protocol (IGMP) controls who receives IP datagrams in a single transmission. The transport layer is built up of two core protocols: TCP and UDP. Transmission control protocol (TCP) sequences and acknowledges packets sent and their recovery when lost in transmission allowing the computer to make and maintain network conversations where applications exchange data, defined as a connection-oriented protocol meaning the connection is maintained until the programs has finished exchanging data. User datagram protocol (UDP) This is used to transfer small amounts of data when the use of error correction isn’t needed increasing the speed of the transmission, common in multi-player video games as the user will not need to receive packets of past events in the game so the error correction featured in (TCP) would be

VPN refers to the networking technology Virtual Private Network. A VPN allows users connected to this network the ability to access any website or computer data from any location in the world with dedicated and secure networking environment rather than being present in a public server. Majority of VPN users belong to business class industry and educational purposes. VPN networks are used in this manner because majority of VPN networks offer the features like encryption and anonymity which increases the privacy and security benefits while using the VPN network. VPN networks also allow the user ability to perform activities on the internet as if they were accessing

IPSec has 2 mechanisms which work together to give the end result, which is a secure way to send data over public networks. Keep in mind that it can use both or just one of these mechanisms together. This is a IPSec tunnel mode and in tunnel mode, an IPSec header (AH or ESP header) is inserted between the IP header and the upper layer protocol. Between AH and ESP, ESP is most commonly used in IPSec VPN Tunnel configuration [10].

With admirable foresight, the Internet Engineering Task Force (IETF) initiated as early as in 1994, the design and development of a suite of protocols and standards now known as Internet Protocol Version 6 (IPv6), as a worthy tool to phase out and supplant IPv4 over the coming years. There is an explosion of sorts in the number and range of IP capable devices that are being released in the market and the usage of these by an increasingly tech savvy global population. The new protocol aims to effectively support the ever-expanding Internet usage and functionality, and also address security concerns.

TCP/IP is the transport/network layer protocol we use on the internet. Many BN’S, MAN’s and WAN’s rely on it. This is because it is relatively efficient, and transmission has few errors. Any errors that are found, are checked and so large files can be sent even in the most unsafe network and the data will still be unchanged. TCP/IP is very compatible with a number of data link protocols as well.

A VPN is a secure protected network called a tunnel for communication purposes over long distances using the Internet as its means of transport. Due to the nature of the communication or transmissions that are being utilized by say a larger corporation, secure and reliable communication is a must. In the beginning these VPN connections were established using one or more dial up modems for users to access the information. Authentication was established by requiring the correct user name and password. As time went on as always things changed, new technology and advances in communication as well as equipment allowed the VPN to evolve and expand. To ensure security, the virtual tunnel is encrypted. VPNs use several protocols in order to encrypt

1) Set of protocols developed to support the secure exchange of packets IPv4 and IPv6

decided by this protocol. This protocol can be used to send data over various area networks like

The first protocol explain is TCP. Starting with the Layer 7, 6, and 5, the Application Layer is providing the payload (data and instructions). The web browser is an example of initiation of Layers 7,6,5 and the payload flow. The Transport

VPN stands for a Virtual Private Network. It’s a means of connecting computer devices to the internet through data or broadband connection while adding a layer of privacy to what you do online. Virtual private network (VPN), presents excellent control of how you are identified online. VPN generates a virtual encrypted channel between your device and a remote server run by a VPN service. Internet traffic is routed through this channel, so your Internet Service Provider can't see your data. Each packet of data transmitted from your device is put inside another packet. Think of it as inserting a letter into an envelope to prevent its contents from being read during transport. Your computer shows the IP address of the VPN server,

VPN is a private network that uses a public network, usually internet, to connect remote sites or users together. It uses virtual connections routed through the Internet from the business's private network to the remote site or employee. VPN is used mostly by the employees who prefer to telecommute or work away from the office. By implementing VPN, the businesses make sure the data is encrypted and can’t be read by the ones who try to intercept the data. The computers at each end of the tunnel encrypt the data entering the tunnel and decrypt it at the other end. An encryption key determines what computations to perform on data in order to encrypt or decrypt it, however, a VPN needs more than just a pair of keys to apply encryption. Hence, a

A VPN offers mobility and security for remote workers. The VPN uses an encrypted connection using the Internet. Remote workers wanting to use the Internet file server need authenticate their identity with a login id, password, RSA token, or smart card. The VPN can be used on company-owned laptops and personal electronic devices (PEDs). The VPN works by using data encapsulation. Encapsulating data packets into another set of data packets and data header this is the ‘tunnel’ used to send private data through the Internet. The data reaches its destination where the data is extracted from the 'tunnel'. It is then sent to the Application Layer where the remote worker can view or retrieve the files. This is a dedicated connection between the company and the remote worker computer. It is failsafe; the data sent through the VPN is encrypted by the sender and decrypted by the receiver. This prevents the data from being altered, read, or stolen by a hacker. Different cryptographic rules on each layer of the OSI model provide secure data transmission, authentication, confidentiality, and nonrepudiation. The cryptographic tunneling rules implemented for data security in each of the OSI layers (starting with the bottom layer) are listed

Therefore, in order to prevent exposure of confidential information, VPNs generally allow only verified remote access and make use of encryption techniques. VPNs provide security by the use of tunneling protocols and through security procedures such as encryption. The VPN security model give confidentiality such that even if the network traffic is sniffed at the packet, an attacker would only see encrypted data, sender authentication to prevent unauthorized users from accessing the VPN and message integrity to detect any occurence of manipulating with transmitted messages

The Wide Area Network (WAN) will interconnect the workplaces by means of Virtual Private Network (VPN) and leased line connections. The VPN connections will be utilized by actualizing Security Socket Layer (SSL) innovations. Utilizing SSL innovations, ABC Company will have the capacity to give the best adaptability to the remote client's in the U.S. Furthermore, there will be no loss of system performance. The VPN will utilize a public network and build up a secure tunnel connection with the inner system. The activity that goes through the passage is encrypted to ensure all information

Internet Protocol is the layer-3 protocol which takes the data Segments from the transport layer that is layer-4 and divides that data into the packets. The IP packet encapsulates data unit received from above layer and concatenates its header information. The encapsulated data is referred to as IP Payload. The IP header contains all the necessary information required to deliver the packet at the destination. The IP header format is shown in figure (a)