Exam CAS-004 topic 1 question 10 discussion

SAML and RADIUS

Definitely SAML and RADIUS (SAML because of just-in-time, and RADIUS because of AAA)

Ans is C. To meet the requirements for supporting MFA, integrating with SaaS applications, applying risk-based policies, and performing just-in-time provisioning, the best choice from the options provided would be: C. OAuth and OpenID OAuth: This protocol is commonly used for authorization in SaaS applications and allows for seamless integration with third-party services. It also supports just-in-time provisioning by allowing access tokens to be generated dynamically. OpenID: This protocol is used for authentication and can enhance user experience by providing a way to log in to multiple applications with a single identity. It also supports MFA, which is crucial for your requirements. Whereas SAML and RADIUS: SAML is good for federated authentication and works well with SaaS, but RADIUS is more focused on network access control and may not support all aspects of your requirements as comprehensively. So, OAuth and OpenID is the most suitable choice.

Ans is C. To meet the requirements for supporting MFA, integrating with SaaS applications, applying risk-based policies, and performing just-in-time provisioning, the best choice from the options provided would be: C. OAuth and OpenID OAuth: This protocol is commonly used for authorization in SaaS applications and allows for seamless integration with third-party services. It also supports just-in-time provisioning by allowing access tokens to be generated dynamically. OpenID: This protocol is used for authentication and can enhance user experience by providing a way to log in to multiple applications with a single identity. It also supports MFA, which is crucial for your requirements. Whereas SAML and RADIUS: SAML is good for federated authentication and works well with SaaS, but RADIUS is more focused on network access control and may not support all aspects of your requirements as comprehensively. So, OAuth and OpenID is the most suitable choice.

ChatGPT goes with C.

C. OAuth and OpenID Reasoning: OAuth and OpenID Connect are widely used for SaaS integrations, JIT provisioning, MFA, and applying risk-based policies. This combination fits the organization's needs most comprehensively.

A. Kerberos and TACACS: [INCORRECT] Kerberos for on-premises auth within a domain but doesn't directly support integration with SaaS . TACACS doesn't support SaaS applications or risk-based policies based on location. B. SAML and RADIUS: [INCORRECT] SAML supports SSO, integrating with SaaS applications and applying risk-based policies based on location. RADIUS is used for NAC but doesn't directly support integration with SaaS applications. SAML aligns with the objectives, but RADIUS doesn't . C. OAuth and OpenID: [CORRECT] OAuth can grant access to resources, including SaaS applications, and can be used for MFA. OpenID provides SSO and user authentication, supports risk-based policies and just-in-time provisioning. D. OTP and 802.1X: [INCORRECT] OTP supports MFA, but is not ideal for integrating with SaaS applications or just-in-time provisioning. 802.1X is used for network access control and doesn't directly support the objectives.

It’s B

OAuth and OpenID Connect are excellent for modern, web-based authentication scenarios, especially for integrating with SaaS applications and providing seamless SSO. However, OAuth and OpenID Connect do not inherently support MFA for on-premises infrastructure. They are more geared towards web and mobile applications and may require additional components to fully support MFA and risk-based policies for on-premises systems.

Oauth and OpenID

C. OAuth and OpenID OAuth (Open Authorization) and OpenID are modern, open-standard protocols that provide secure delegated access. They’re widely used for single sign-on (SSO) and identity federation. OAuth is a protocol that allows an application to authenticate against a server as a user, without requiring passwords or tokens to be passed to the application itself. This is particularly useful for SaaS applications. OpenID Connect (an extension of OAuth) is a protocol that allows clients to verify the identity of an end-user based on the authentication performed by an authorization server. Both OAuth and OpenID support just-in-time provisioning, which is the ability to create a user account within an application at the time of authentication2.

C. OAuth and OpenID Explanation: OAuth (Open Authorization) is commonly used for authorization and delegated access. It is suitable for scenarios where a user wants to grant a third-party application limited access to their resources without sharing their credentials. OAuth is often used in conjunction with OpenID Connect (OIDC) for authentication. OpenID Connect (OIDC) is an identity layer built on top of OAuth 2.0. It provides an authentication layer, allowing clients to verify the identity of end-users based on the authentication performed by an authorization server.

To support the specified objectives, the organization should implement the following authentication protocols: C. OAuth and OpenID Explanation: OAuth: OAuth is commonly used for delegated authorization and is suitable for integrating with SaaS applications. It allows secure access to resources without sharing the user's credentials. OpenID: OpenID is an authentication protocol that enables single sign-on (SSO) and is often used in conjunction with OAuth for user authentication. It is useful for improving the user experience by providing seamless access to multiple applications. This combination of OAuth and OpenID can help achieve multi-factor authentication (MFA), integrate with SaaS applications, and enhance the overall user experience.

The organization's objectives involve supporting multi-factor authentication (MFA), integrating with SaaS applications, applying risk-based policies, and performing just-in-time provisioning. The most suitable authentication protocols for these requirements are: C. OAuth and OpenID Explanation: OAuth (Open Authorization): OAuth is commonly used for authorization and enables secure API authorization flows, making it suitable for integrating with SaaS applications. It allows users to grant third-party applications limited access to their resources without sharing their credentials. OpenID: OpenID is an authentication protocol built on top of OAuth. It allows users to authenticate on one website and share their identity securely with other websites without the need to expose credentials. OpenID is beneficial for improving the user experience by enabling single sign-on (SSO) and supporting just-in-time provisioning.

OAuth and OpenID

You could make arguments for B, however C will be the correct answer on the test. The phrase "Identity and Access Management" aka IAM, is generally associated with OAuth, OIDC and SAML - but not RADIUS. Additionally, the requirement of SaaS integration would take RADIUS off of the table completely.

While B is a valid answer, the MOST correct answer is C. According to ChatGPT, OAuth/OpenID is considered a more versatile and modern solution.