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 +##

sc-31(2)

covert channel analysis  | maximum bandwidth

assessment objective:

Determine if the organization:

sc-31(2)[1]

defines values to be employed as the maximum bandwidth allowed for identified covert channels; and

sc-31(2)[2]

reduces the maximum bandwidth to organization-defined values for one or more of the following identified:

sc-31(2)[2][a]

covert storage channels; and/or

sc-31(2)[2][b]

covert timing channels.

potential assessment methods and objects:

Examine: [SELECT FROM: System and communications protection policy; procedures addressing covert channel analysis; acquisition contracts for information systems or services; acquisition documentation; information system design documentation; information system configuration settings and associated documentation; covert channel analysis documentation; information system audit records; other relevant documents or records].

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

Test: [select from: Organizational process for conducting covert channel analysis; automated mechanisms supporting and/or implementing covert channel analysis; automated mechanisms supporting and/or implementing the capability to reduce the bandwidth of covert channels].