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If VPN is considered then IPSEC is also an option (possibly combined with L2TP).
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If VPN is considered then IPSEC is also an option (possibly combined with L2TP).

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Dear Experts<br />
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We have a requirement to enable the secured data transfer from the users working remotely , the data types are documents sent through email and also upload though &nbsp;web based applications, is there a way or solution where first keys exchanges happens from the user system to the corporate network and then after the data transfer is allowed please suggest the best practice solution our objective is to achieve highest level of secured data transfer at system level &nbsp;and also through the application level, the strong encryption mechanism is the need. please suggest
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Dear Experts

We have a requirement to enable the secured data transfer from the users working remotely , the data types are documents sent through email and also upload though  web based applications, is there a way or solution where first keys exchanges happens from the user system to the corporate network and then after the data transfer is allowed please suggest the best practice solution our objective is to achieve highest level of secured data transfer at system level  and also through the application level, the strong encryption mechanism is the need. please suggest

data transfer with encryption mechanism

Encryption is the process of encoding messages or information in such a way that only authorized parties can read it. In an encryption scheme, the intended communication information or message, referred to as plaintext, is encrypted using an encryption algorithm, generating ciphertext that can only be read if decrypted. For technical reasons, an encryption scheme usually uses a pseudo-random encryption key generated by an algorithm. An authorized recipient can easily decrypt the message with the key provided by the originator to recipients, but not to unauthorized interceptors.

Encryption

Network security consists of the policies adopted to prevent and monitor authorized access, misuse, modification, or denial of a computer network and network-accessible resources. Network security involves the authorization of access to data in a network, and covers a variety of computer networks; conducting transactions and communications among businesses, government agencies and individuals. Networks can be private, such as within a company, and others which might be open to public access.

Network Security

Security is the protection of information systems from theft or damage to the hardware, the software, and the information on them, as well as from disruption or misdirection of the services they provide. The main goal of security is protecting assets, and an asset is anything of value and worthy of protection.  Information Security is a discipline of protecting information assets from threats through safeguards to achieve the objectives of confidentiality, integrity, and availability or CIA for short. On the other hand, disclosure, alteration, and disruption (DAD) compromise the security objectives.