Show/Hide Toolbars

ABCI Consultants

Guidance for NIST 800-171 Assessment & Compliance

Navigation: AC-FAMILY: ACCESS CONTROL

AC-21 INFORMATION SHARING

Scroll Prev Top Next More

Applicable

(Y)es / (N)o

(C)onfidentiality

(I)ntegrity

(A)vailability

RPN

(C+I+A)

(S)atisfactory

L1

M2

H3

L1

M2

H3

L1

M2

H3

(O)ther than satisfactory +##

 

 

 

 

 

 

 

 

 

 

 

 

###

ac-21

information sharing  

 

assessment objective:

Determine if the organization: 

ac-21(a)

ac-21(a)[1]

defines information sharing circumstances where user discretion is required;

ac-21(a)[2]

facilitates information sharing by enabling authorized users to determine whether access authorizations assigned to the sharing partner match the access restrictions on the information for organization-defined information sharing circumstances;

ac-21(b)

ac-21(b)[1]

defines automated mechanisms or manual processes to be employed to assist users in making information sharing/collaboration decisions; and

ac-21(b)[2]

employs organization-defined automated mechanisms or manual processes to assist users in making information sharing/collaboration decisions.

potential assessment methods and objects:

Examine: [select from: Access control policy; procedures addressing user-based collaboration and information sharing (including restrictions); information system design documentation; information system configuration settings and associated documentation; list of users authorized to make information sharing/collaboration decisions; list of information sharing circumstances requiring user discretion; other relevant documents or records].

Interview: [select from: Organizational personnel responsible for making information sharing/collaboration decisions; system/network administrators; organizational personnel with information security responsibilities].

Test: [select from: Automated mechanisms or manual process implementing access authorizations supporting information sharing/user collaboration decisions].

Hosted by ABCI Consultants for Information Security Management Systems | Implementations, Training and Assessments for Compliance | (800) 644-2056