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Visual Overview: graph TB subgraph "Zero Trust Architecture" User[User/Device] --> Verify{Identity Verification} Verify --> MFA[Multi-Factor Auth] MFA --> Context{Context Analysis} Context --> Policy{Policy Engine} Policy --> |Allow| Resource[Protected Resource] Policy --> |Deny| Block[Access Denied] Context --> Device[Device Trust] Context --> Location[Location Check] Context --> Behavior[Behavior Analysis] end style Verify fill:#667eea,color:#fff style Policy fill:#764ba2,color:#fff style Resource fill:#4caf50,color:#fff style Block fill:#f44336,color:#fff 🔑 What is Identity and Access Management (IAM)? Identity and Access Management (IAM) is a framework of policies and technologies that ensures the right individuals have the appropriate access to technology resources. IAM systems are essential for organizations to securely manage digital identities, control access to applications, and ensure data security. ...

Visual Overview: sequenceDiagram participant User participant SP as Service Provider participant IdP as Identity Provider User->>SP: 1. Access Protected Resource SP->>User: 2. Redirect to IdP (SAML Request) User->>IdP: 3. SAML AuthnRequest IdP->>User: 4. Login Page User->>IdP: 5. Authenticate IdP->>User: 6. SAML Response (Assertion) User->>SP: 7. POST SAML Response SP->>SP: 8. Validate Assertion SP->>User: 9. Grant Access Security Assertion Markup Language (SAML) is an XML-based open standard used for exchanging authentication and authorization data between different security domains. SAML is most commonly used in Single Sign-On (SSO) scenarios, allowing users to access multiple applications or services without the need to log in repeatedly. It has become a critical technology for enabling secure identity management across web-based applications, particularly in enterprise environments and cloud services. ...

Visual Overview: sequenceDiagram participant User participant App as Client App participant AuthServer as Authorization Server participant Resource as Resource Server User->>App: 1. Click Login App->>AuthServer: 2. Authorization Request AuthServer->>User: 3. Login Page User->>AuthServer: 4. Authenticate AuthServer->>App: 5. Authorization Code App->>AuthServer: 6. Exchange Code for Token AuthServer->>App: 7. Access Token + Refresh Token App->>Resource: 8. API Request with Token Resource->>App: 9. Protected Resource OAuth 2.0 is a widely used authorization framework that enables applications to access user data on behalf of the user without requiring the user to share their credentials. It provides a secure and standardized approach to delegating access control, ensuring that applications can interact with various services while keeping user information private. The Authorization Code Flow is one of the core grant types in OAuth 2.0, designed for scenarios where both the client and the authorization server need to exchange information securely. ...

Security Assertion Markup Language (SAML) is a robust open standard that enables the exchange of authentication and authorization data between different security domains. It is most commonly used in Single Sign-On (SSO) scenarios, allowing users to access multiple applications with a single login. To effectively implement and manage secure SSO systems, it’s essential to understand the fundamental components of SAML: Assertion, Binding, Protocol, and Metadata. 1. Assertion Visual Overview: sequenceDiagram participant User participant SP as Service Provider participant IdP as Identity Provider User->>SP: 1. Access Protected Resource SP->>User: 2. Redirect to IdP (SAML Request) User->>IdP: 3. SAML AuthnRequest IdP->>User: 4. Login Page User->>IdP: 5. Authenticate IdP->>User: 6. SAML Response (Assertion) User->>SP: 7. POST SAML Response SP->>SP: 8. Validate Assertion SP->>User: 9. Grant Access The Assertion is the core element of the SAML protocol. It represents a statement made by the Identity Provider (IdP) about a subject, usually the user, and contains authentication and authorization information. This information is passed to the Service Provider (SP), which uses it to grant or deny access to the requested resources. There are three main types of assertions: ...

Visual Overview: sequenceDiagram participant App as Client Application participant AuthServer as Authorization Server participant Resource as Resource Server App->>AuthServer: 1. Client Credentials (client_id + secret) AuthServer->>AuthServer: 2. Validate Credentials AuthServer->>App: 3. Access Token App->>Resource: 4. API Request with Token Resource->>App: 5. Protected Resource OAuth 2.0 is a widely used authorization framework that enables applications to obtain limited access to user accounts on an HTTP service. Among its several grant types, the Client Credentials Flow is uniquely designed for machine-to-machine (M2M) communication where no user is involved. ...

Visual Overview: sequenceDiagram participant User participant SP as Service Provider participant IdP as Identity Provider User->>SP: 1. Access Protected Resource SP->>User: 2. Redirect to IdP (SAML Request) User->>IdP: 3. SAML AuthnRequest IdP->>User: 4. Login Page User->>IdP: 5. Authenticate IdP->>User: 6. SAML Response (Assertion) User->>SP: 7. POST SAML Response SP->>SP: 8. Validate Assertion SP->>User: 9. Grant Access SAML (Security Assertion Markup Language) is a widely adopted standard for Single Sign-On (SSO) in enterprise identity federation. Just as SAML SSO simplifies user authentication across multiple systems, SAML Single Logout (SLO) provides a standardized way to terminate sessions across those same systems. Let’s explore how it works and the critical differences between redirect vs POST bindings, SP-initiated vs IdP-initiated logout, and the essential role of the Session Index. ...