The firewall must generate traffic log entries containing information to establish what type of events occurred.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-79435	SRG-NET-000074-FW-000009	SV-94141r1_rule		Medium

Description
Without establishing what type of event occurred, it would be difficult to establish, correlate, and investigate the events leading up to an outage or attack. Audit event content that may be necessary to satisfy this requirement includes, for example, time stamps, source and destination addresses, user/process identifiers, event descriptions, success/fail indications, filenames involved, and access control or flow control rules invoked. Associating event types with detected events in the network element logs provides a means of investigating an attack, recognizing resource utilization or capacity thresholds, or identifying an improperly configured network element.

Description

Without establishing what type of event occurred, it would be difficult to establish, correlate, and investigate the events leading up to an outage or attack. Audit event content that may be necessary to satisfy this requirement includes, for example, time stamps, source and destination addresses, user/process identifiers, event descriptions, success/fail indications, filenames involved, and access control or flow control rules invoked. Associating event types with detected events in the network element logs provides a means of investigating an attack, recognizing resource utilization or capacity thresholds, or identifying an improperly configured network element.

STIG	Date
Firewall Security Requirements Guide	2019-06-28

Details

Check Text ( C-79049r1_chk )
Examine the traffic log configuration on the firewall or view several alert events on the organization's central audit server. Verify the entries sent to the traffic log include sufficient information to determine the type or category for each event in the traffic log. If the traffic log entries do not include enough information to determine what type of event occurred, this is a finding.

Fix Text (F-86207r1_fix)
Configure the firewall to ensure entries sent to the traffic log include sufficient information to determine the type or category for each event in the traffic log.