IA-2(8): Network Access To Privileged Accounts – Replay Resistant

CSF v1.1 References:

Threats Addressed:


  • Moderate
  • High

Next Version:

Control Statement

The information system implements replay-resistant authentication mechanisms for network access to privileged accounts.

Supplemental Guidance

Authentication processes resist replay attacks if it is impractical to achieve successful authentications by replaying previous authentication messages. Replay-resistant techniques include, for example, protocols that use nonces or challenges such as Transport Layer Security (TLS) and time synchronous or challenge-response one-time authenticators.