A company with a US-based sales force has requested that the VPN system be configured to authenticate the sales team based on their username, password and a client side certificate. How many authentication factors are in use by the VPN system?
The three types of authentication factors are something you know, something you have, and something you are. In this case 2 factors are used: 1. The user must know the username and password. 2. The user must have a valid client side certificate.
Multi-factor authentication (MFA) is a method of confirming a user's claimed identity in which a user is granted access only after successfully presenting 2 or more pieces of evidence (or factors) to an authentication mechanism: knowledge (something they and only they know), possession (something they and only they have), and inherence (something they and only they are).
Two-factor authentication (also known as 2FA) is a type (subset) of multi-factor authentication. It is a method of confirming …