Which of the following authentication methods are NOT used for Mobile Access?

The option related to TACACS+ is correct because it is generally not used in the context of Mobile Access authentication methods supported by Check Point. Mobile Access primarily supports authentication methods that are more commonly deployed for user access in mobile and remote environments.

In typical configurations, Mobile Access utilizes methods such as RADIUS servers, where a central authentication server facilitates secure user authentication for mobile devices. Additionally, username and password combinations, whether internal or through LDAP, provide a straightforward and widely accepted means of verifying user identities. SecurID, which uses one-time passwords and can integrate with RADIUS, is also a recognized method in securing mobile access.

Conversely, TACACS+ is a protocol used largely for device administration and is more characteristic of network devices like routers and switches, rather than for user authentication in mobile access scenarios. While TACACS+ serves a significant role in various IT environments, it does not align with the standard authentication practices typically utilized for mobile access.