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(13)

information system monitoring  | analyze traffic/event patterns

assessment objective:

Determine if the organization:

si-4(13)(a)

analyzes communications traffic/event patterns for the information system;

si-4(13)(b)

develops profiles representing common traffic patterns and/or events;

si-4(13)(c)

uses the traffic/event profiles in tuning system-monitoring devices to reduce the number of false positives and false negatives.

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; list of profiles representing common traffic patterns and/or events; information system protocols documentation; list of acceptable thresholds for false positives and false negatives; 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/information system monitoring capability; automated mechanisms supporting and/or implementing analysis of communications traffic/event patterns].