The IDPS must enforce information flow control using explicit security attributes on information, source, and destination objects as a basis for flow control decisions.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
SRG-NET-000020-IDPS-000044	SRG-NET-000020-IDPS-000044	SRG-NET-000020-IDPS-000044_rule		Medium

Description

Information flow control regulates where information is allowed to travel within a network and between interconnected networks. The flow of all network traffic must be monitored and controlled so it does not introduce any unacceptable risk to the network infrastructure or data. Restrictions can be enforced based on source and destination IP addresses as well as the ports and services being requested. This requirement should enforce the deny-by-default policy whereby only the known and accepted traffic will be allowed outbound and inbound. This requirement helps ensure that inbound and outbound traffic is inspected for possible attacks.

STIG	Date
IDPS Security Requirements Guide (SRG)	2012-03-08

Details

Check Text ( C-43162_chk )
Examine the network configuration on the sensors. Verify source and destination IP addresses are used as a basis for information flow. If non-explicit items like server name or MAC addresses are used for information flow control, this is a finding. If source and destination IP address is not used, this is a finding.

Fix Text (F-43162_fix)
Configure the network configuration on the sensors for external communications using IP addresses