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 +##

si-4(4)

information system monitoring  | inbound and outbound communications traffic

assessment objective:

Determine if the organization:

si-4(4)[1]

defines a frequency to monitor:

si-4(4)[1][a]

inbound communications traffic for unusual or unauthorized activities or conditions;

si-4(4)[1][b]

outbound communications traffic for unusual or unauthorized activities or conditions;

si-4(4)[2]

monitors, with the organization-defined frequency:

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

inbound communications traffic for unusual or unauthorized activities or conditions; and

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

outbound communications traffic for unusual or unauthorized activities or conditions.

potential assessment methods and objects:

Examine: [select from: System and information integrity policy; procedures addressing information system monitoring tools and techniques; information system design documentation; information system monitoring tools and techniques documentation; information system configuration settings and associated documentation; information system protocols; information system audit records; other relevant documents or records].

Interview: [select from: System/network administrators; organizational personnel with information security responsibilities; organizational personnel installing, configuring, and/or maintaining the information system; organizational personnel with responsibility for monitoring the information system; organizational personnel with responsibility for the intrusion detection system].

Test: [select from: Organizational processes for intrusion detection/information system monitoring; automated mechanisms supporting and/or implementing intrusion detection capability/information system monitoring; automated mechanisms supporting and/or implementing monitoring of inbound/outbound communications traffic].