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Virtual Private Networks – The Basics

Thursday , 2, July 2020 Comments Off on Virtual Private Networks – The Basics

Virtual Private Networks (VPN) can extend a local area network (LAN) via the Internet to remote client machines and remote networks. A VPN makes use of the Internet to transmit LAN traffic from one place to another by encapsulating the information into encrypted IP packets. Encrypted packets are not readable by a mediator Internet device and are composed of any kind of network communications.

The VPN server can be configured using computers, firewalls, or routers. The client access to the VPN can be done using a client-side recompense VPN software (also called as 재 보상 VPN in the Korean language) or by connecting to an ISP that supports the VPN protocol.

What is VPN - Virtual Private Network? Webopedia Definition

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VPNs solve the problem of access to private servers over the Internet through a combination of IP encapsulation, cryptographic authentication, and data encryption payload.

IP Tunneling:

IP encapsulation provides a way to protect data in transit between the client and the remote private LAN. Computers outside the VPN should not be able to snoop on traffic exchanged between the client and the remote private or be able to insert your own data flow in between the communication server. When an IP packet contains another IP packet this is called IP encapsulation and provides a mechanism to refer to a host within a private network where there can be no direct network connection.

Cryptographic Authentication:

Cryptographic authentication is used to validate the identity safely from the remote client to the private LAN that can determine what security level should be applied to that user. VPN use the authentication process to determine whether or not a remote user can enter the tunnel encryption.

Data Encryption Payload:

Payload data encryption uses a public key to encrypt the data field of the encapsulated IP packet. Data encryption payload is exactly like normal IP except that the data has been encrypted.