Virtual Private Networks 1

Confidentiality

Ensures that only the intended recipient can read the transmitted data while, at the same time, thwarting efforts by other parties that might intercept it. Confidentiality is provided by encryption algorithms, such as DES or 3DES.

Authentication

Verification of the identity of a person or process that sent the data. Authentication is provided by mechanisms, such as exchanging digital certificates.

Integrity

Ensures the data received is exactly what was transmitted from the source without alterations or additions. Integrity is provided by hashing algorithms, such as MD5 or SHA.