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-4(4)

information flow enforcement | content check encrypted information

assessment objective:

Determine if:

ac-4(4)[1]

the organization defines a procedure or method to be employed to prevent encrypted information from bypassing content-checking mechanisms;

ac-4(4)[2]

the information system prevents encrypted information from bypassing content-checking mechanisms by doing one or more of the following:

ac-4(4)[2][a]

decrypting the information;

ac-4(4)[2][b]

blocking the flow of the encrypted information;

ac-4(4)[2][c]

terminating communications sessions attempting to pass encrypted information; and/or

ac-4(4)[2][d]

employing the organization-defined procedure or method.

potential assessment methods and objects:

Examine: [select from: Access control policy; information flow control policies; procedures addressing information flow enforcement; information system design documentation; information system configuration settings and associated documentation; information system audit records; other relevant documents or records].

Interview: [select from: System/network administrators; organizational personnel with information security responsibilities; system developers].

Test: [select from: Automated mechanisms implementing information flow enforcement policy].