What is meant by "Multi-Factor Authentication" in Palo Alto Networks?

Multi-Factor Authentication (MFA) refers to a security process that enhances protection by requiring users to provide two or more verification factors to gain access to a resource such as an application, online account, or VPN. This process aims to improve security by adding an extra layer beyond just a username and password.

In the context of Palo Alto Networks, MFA could involve something the user knows (like a password), something the user has (like a smart card or mobile device), or something the user is (such as a fingerprint or other biometric verification). By asking for multiple factors, MFA significantly reduces the risk of unauthorized access, as an attacker would need to compromise more than one element to gain access to a protected system.

The choices that suggest relying solely on a user ID and password or using just a single verification factor do not align with the definition of MFA, as these approaches do not provide the additional security layer that multiple verification factors offer. Similarly, while procedures that eliminate the need for passwords may enhance usability, they do not fit the definition or practice of Multi-Factor Authentication, which explicitly involves maintaining some form of password or credential alongside other factors.