How does encryption differ from authentication when implemen

How does encryption differ from authentication when implementing a VPN? Why?

Solution

Authentication:

Authentication is a method to make sure that the user is really the one he/she said. Most accepted authentication method is username/password.

Authentication is used to describe a total of methods of ensuring you who are you say you are. AT its simplest its supplying a username and password to a server, it could also be a smart card, your bank card+pin or even a biometric authentication scheme.

Authentication is used by a server when the server commitments to know exactly who is accessing their information or site.

Authentication is used by a client when the client commitments to know that the server is system it claims to be.

In authentication, the user or computer has to prove its identity to the server or client.

Usually, authentication by a server entails the use of a user name and password. Other ways to authenticate can be through cards, retina scans, voice recognition, and fingerprints.

Authorization should be used whenever you want to control viewer access of certain pages

Encryption:

Encryption has nothing to do with the end user. It is a way for two computers or systems to protect the transmitting data so that none in the path can read it. The most common encryption method is by using a pre-shared-key, that is an encryption key that both parties already know.

Encryption is used to encrypt traffic between two points, and can be used for files, data streams or together with authentication to ensure END to END the data and authentication is secure.

Encryption involves the process of transforming data so that it is unreadable by anyone who does not have a decryption key.

The Secure Shell (SSH) and Socket Layer (SSL) protocols are usually used in encryption processes. The SSL drives the secure part of “https://” sites used in e-commerce sites (like E-Bay and Amazon.com.)

All data in SSL transactions is encrypted between the client (browser) and the server (web server) before the data is transferred between the two.

Encryption should be used whenever people are giving out personal information to register for something or buy a product. Doing so ensures the person’s privacy during the communication