Check: SRG-NET-000391-CLD-000220
Cloud Computing Mission Owner SRG:
SRG-NET-000391-CLD-000220
(in version v1 r0.1)
Title
The Mission Owner of the IaaS must continuously monitor outbound communications to other systems and enclaves for unusual or unauthorized activities or conditions. (Cat II impact)
Discussion
Evidence of malicious code is used to identify potentially compromised information systems or information system components. Unusual/unauthorized activities or conditions related to outbound communications traffic include, for example, internal traffic that indicates the presence of malicious code within organizational information systems or propagating among system components, the unauthorized exporting of information, or signaling to external information systems. Anomalies within organizational information systems include, for example, large file transfers, long-time persistent connections, unusual protocols and ports in use, and attempted communications with suspected malicious external addresses. This function may be deployed within the cloud service environment, the MeetMe Point, cloud access point, or supporting Core Data Center (CDC).
Check Content
If this is a SaaS, this is not applicable. Inspect the firewall and/or IDPS ACLs and filtering rules that filter traffic on any outbound interface from the IaaS's and systems. Verify these rules are configured for continuous monitoring. Verify the ACLs and security rules include rules and ACLs that detect and filter unusual or unauthorized activities or conditions such as large file transfers, persistent connections, unusual protocols and ports in use, communication with unauthorized entities, or other unusually high traffic from particular segments or devices. If the IaaS/PaaS does not continuously monitor outbound communications to other enclaves and systems for unusual or unauthorized activities or conditions, this is a finding.
Fix Text
This applies to all Impact Levels. FedRAMP Moderate, High. Configure the firewall and/or IDPS for continuous monitoring of all communications outbound from the virtual IaaS or PaaS. Configure any ACLS and filtering rules on outbound interfaces to detect and filter unusual or unauthorized activities or conditions such as large file transfers, persistent connections, unusual protocols and ports in use, communication with unauthorized entities, or other unusually high traffic from particular segments or devices.
Additional Identifiers
Rule ID: SRG-NET-000391-CLD-000220_rule
Vulnerability ID: SRG-NET-000391-CLD-000220
Group Title: SRG-NET-000391-CLD-000220
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-002662 |
The information system monitors outbound communications traffic per organization-defined frequency for unusual or unauthorized activities or conditions. |
Controls
Number | Title |
---|---|
SI-4 (4) |
Inbound And Outbound Communications Traffic |