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Palo Alto Networks ALG Security Technical Implementation Guide
SRG-NET-000391-ALG-000140
The Palo Alto Networks security platform must continuously monitor outbound communications traffic crossing internal security boundaries.
The Palo Alto Networks security platform must continuously monitor outbound communications traffic crossing internal security boundaries.
An XCCDF Rule
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The Palo Alto Networks security platform must continuously monitor outbound communications traffic crossing internal security boundaries.
Medium Severity
<VulnDiscussion>If outbound communications traffic is not continuously monitored, hostile activity may not be detected and prevented. Output from application and traffic monitoring serves as input to continuous monitoring and incident response programs. Internal monitoring includes the observation of events occurring on the network crosses internal boundaries at managed interfaces such as web content filters. Depending on the type of ALG, organizations can monitor information systems by monitoring audit activities, application access patterns, characteristics of access, content filtering, or unauthorized exporting of information across boundaries. Unusual/unauthorized activities or conditions may include large file transfers, long-time persistent connections, unusual protocols and ports in use, and attempted communications with suspected malicious external addresses. Most current applications are deployed as a multi-tier architecture. The multi-tier model uses separate server machines to provide the different functions of presentation, business logic, and database. The multi-tier architecture provides added security because a compromised web server does not provide direct access to the application itself or to the database.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>