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-20

use of external information  systems

assessment objective:

Determine if the organization establishes terms and conditions, consistent with any trust relationships established with other organizations owning, operating, and/or maintaining external information systems, allowing authorized individuals to:

ac-20(a)

access the information system from the external information systems; and

ac-20(b)

process, store, or transmit organization-controlled information using external information systems.

potential assessment methods and objects:

Examine: [select from: Access control policy; procedures addressing the use of external information systems; external information systems terms and conditions; list of types of applications accessible from external information systems; maximum security categorization for information processed, stored, or transmitted on external information systems; information system configuration settings and associated documentation; other relevant documents or records].

Interview: [select from: Organizational personnel with responsibilities for defining terms and conditions for use of external information systems to access organizational systems; system/network administrators; organizational personnel with information security responsibilities].

Test: [select from: Automated mechanisms implementing terms and conditions on use of external information systems].