The ALG providing content filtering must detect use of network services that have not been authorized or approved by the ISSM and ISSO, at a minimum.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-54667	SRG-NET-000384-ALG-000136	SV-68913r1_rule		Medium

Description

Unauthorized or unapproved network services lack organizational verification or validation and therefore may be unreliable or serve as malicious rogues for valid services. Examples of network services include service-oriented architectures (SOAs), cloud-based services (e.g., infrastructure as a service, platform as a service, or software as a service), cross-domain, Voice Over Internet Protocol, Instant Messaging, auto-execute, and file sharing. To comply with this requirement, the ALG may be configured to detect services either directly or indirectly (i.e., by detecting traffic associated with a service). This requirement applies to gateways/firewalls that perform content inspection or have higher-layer proxy functionality.

STIG	Date
Application Layer Gateway Security Requirements Guide	2014-11-03

Details

Check Text ( C-55287r1_chk )
If the ALG does not perform content filtering as part of the traffic management functions, this is not applicable. Verify the ALG detects use of network services that have not been authorized or approved by the ISSM and ISSO, at a minimum. If the ALG does not detect use of network services that have not been authorized or approved by the ISSM and ISSO, at a minimum, this is a finding.

Fix Text (F-59523r1_fix)
If the ALG performs content filtering as part of the traffic management functionality, configure the ALG to detect use of network services that have not been authorized or approved by the ISSM and ISSO, at a minimum.