The ITI Audit Trail and Node Authentication (ATNA) Profile establishes the characteristics of a Basic Secure Node: It describes the security environment (user identification, authentication, authorization, access control, etc.) assumed for the node so that security reviewers may decide whether this matches their environments. It defines basic security requirements for the communications of the node using TLS or equivalent functionality. It defines basic auditing requirements for the node. The profile also establishes the characteristics of the communication of audit messages between the Basic Secure Nodes and Audit Repository nodes that collect audit information. 