V-272061

Discussion

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. Information flow control policies and enforcement mechanisms are commonly employed by organizations to control the flow of information between designated sources and destinations (e.g., networks, individuals, and devices) within information systems. In Cisco ACI, the administrator uses "contracts" to define security policies that control traffic between different endpoint groups (EPGs), essentially acting as a more granular and flexible ACL mechanism by specifying source and destination addresses, ports, and protocols based on the desired network segmentation needs. Add multiple filter rules to create a comprehensive set of allowed traffic patterns. Satisfies: SRG-NET-000019-RTR-000005, SRG-NET-000715-RTR-000120

Check Content

Review the switch configuration to verify that contracts are configured.

1. To check contract configuration, navigate to Tenants >> {{Your_Tenant}} >> Contracts >> Standard (whitelist)/Taboos (blacklist) >> {{Your_Contract}} >> {{your_subject}}.
2. To check the configuration for the Provider and Consumer of the contract, navigate to Tenants >> {{Your_Tenant}} >> Application Profiles >> {{ your_Application_Profile}} >> Application EPGs >> {{Your_EPG}} >> Contracts.
 
If the switch is not configured to use contract filters to enforce approved authorizations for controlling the flow of information within the network based on organization-defined information flow control policies, this is a finding.