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IA-2(8)Identification and Authentication (organizational Users) | Access to Accounts -- Replay Resistant

IL4 Mod
IL4 High
IL5
IL6

>Control Description

Implement replay-resistant authentication mechanisms for access to [Selection (one or more): privileged accounts; non-privileged accounts].

>DoD Impact Level Requirements

FedRAMP Parameter Values

IA-2 (8) [privileged accounts; non-privileged accounts]

>Discussion

Authentication processes resist replay attacks if it is impractical to achieve successful authentications by replaying previous authentication messages. Replay-resistant techniques include protocols that use nonces or challenges such as time synchronous or cryptographic authenticators.

>Programmatic Queries

Beta

Related Services

IAM
AWS KMS
Signature Version 4

CLI Commands

List API keys with age
aws iam list-access-keys --user-name USERNAME --query 'AccessKeyMetadata[*].{AccessKeyId:AccessKeyId,CreateDate:CreateDate}'
Enable temporary credentials
aws sts get-session-token --serial-number arn:aws:iam::ACCOUNT:mfa/DEVICE --token-code 123456
Check signature version enforcement
aws s3api get-bucket-versioning --bucket BUCKET_NAME

>Assessment Interview Topics

Questions assessors commonly ask

Process & Governance:

  • What formal policies and procedures govern the implementation of IA-2(8) (Access To Accounts -- Replay Resistant)?
  • Who are the designated roles responsible for implementing, maintaining, and monitoring IA-2(8)?
  • How frequently is the IA-2(8) policy reviewed and updated, and what triggers policy changes?
  • What governance structure ensures IA-2(8) requirements are consistently applied across all systems?

Technical Implementation:

  • Describe the specific technical mechanisms or controls used to enforce IA-2(8) requirements.
  • What automated tools, systems, or technologies are deployed to implement IA-2(8)?
  • How is IA-2(8) integrated into your system architecture and overall security posture?
  • What configuration settings, parameters, or technical specifications enforce IA-2(8) requirements?

Evidence & Documentation:

  • What documentation demonstrates the complete implementation of IA-2(8)?
  • What audit logs, records, reports, or monitoring data validate IA-2(8) compliance?
  • Can you provide evidence of periodic reviews, assessments, or testing of IA-2(8) effectiveness?
  • What artifacts would you present during a FedRAMP assessment to demonstrate IA-2(8) compliance?

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