Lightweight Directory Access Protocol

Lightweight Directory Access Protocol: Protocol for querying and modifying distributed directory services. The term is central to identity and access controls. In practice, clear policies, loggingLoggingThe recording of security-relevant events so activity can be monitored, investigated, and audited., regular reviews, and the strongest possible authentication are crucial.

How it works and where it fits

Lightweight Directory Access Protocol concerns communication between systems and therefore addressing, protocol state, trust boundaries, and reachable services. Security analysis must look beyond individual packets to direction, session, identity, encryption, and intended purpose. Different network layers introduce their own controls, assumptions, and failure modes.

Practical security relevance

Communication paths should be documented, unnecessary connections prevented, and permitted flows defined as narrowly as practical. Segmentation, secure protocols, authentication, and logging reinforce one another. Monitoring should cover known signatures as well as unusual destinations, volumes, and timing; rule and topology changes belong in a controlled process.

Related concepts

• AuthenticationAuthenticationVerification of the claimed identity of a user or system.: Verification of the claimed identity of a user or system.
• AuthorizationAuthorizationDecision regarding which actions an authenticated identity is permitted to perform.: Decision regarding which actions an authenticated identity is permitted to perform.
• Identity and Access ManagementIdentity and Access ManagementManages digital identities, roles, permissions, and access lifecycles.: Manages digital identities, roles, permissions, and access lifecycles.
• Least PrivilegeLeast PrivilegeGrants only the minimum permissions necessary for a specific task and timeframe.: Grants only the minimum permissions necessary for a specific task and timeframe.