Virtual Private Networks (VPN), Hybrid Networks, Thin...

Virtual Private Network (VPN)

are created for:

• Providing remote access to individual users, for example, employees on a business trip. Its implementation can be complicated by such factors as different operating systems and protocols installed on client computers. Client VPNs must support the protocols used by the server (tunneling protocols, network and transport protocols), and the encryption methods that are used in this VPN;

• Creating an extranet. Extranet is a part of the company's local network, which can store technical materials for customers or shared documents for partners of the company, i.e. data that does not require protection. The rest of the internal network must be protected from external access;

• Communication between two offices located at a great distance, without the cost of dedicated direct channels.

Virtual network is a network that is superimposed on a real physical network by creating virtual source-destination channels. The Virtual channel is functionally equivalent to the dedicated point-to-point logical connection. The data transfer path is not fixed, so the virtual channel can have a different configuration in the real network. The data is transferred from node to node, consistently forming point-to-point connections using the encapsulation method, the essence of which is that additional headers are added to the packet transmitted through the transit nodes of the network, which after each node is deleted. Thus, VPN technology creates a logical network, independent of the location of terminal devices and direct physical connections. A virtual channel is usually created in a public network (Internet) and is called a tunnel. A private network requires additional measures to protect the information transmitted over VPN. The requirement of confidentiality is especially important, because packets transmitted over a public network are vulnerable to interception when they pass through each of the nodes (servers) on the way from source to destination. The implementation is the responsibility of tunnels that must support the authentication of users and the encryption of data from one end of the tunnel to the other.

Hybrid Networks

A network that uses a different type of composition, i.e. A hybrid network. In a modern corporate world, even small local networks are hybrid across all of the above listed features, not to mention a global network such as the Internet.

Thin Client Networks

The term thin client (Thin Client) means a networked computer with limited computing resources. Thin client technology allows you to use legacy or low-performance computers to run many popular applications that require a high-speed processor and a large amount of memory. To do this, the computer is installed software that provides a connection to the terminal server and the execution of the necessary programs on it. Only thin copies of the screen are transmitted to the thin client via the network.

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