Information
If the gateway router is not a dedicated device for the OOBM network, implementation of several safeguards for containment of management and production traffic boundaries must occur. Since the managed and management network are separate routing domains, configuration of separate IGP routing instances is critical on the router to segregate traffic from each network.
NOTE: Nessus has provided the target output to assist in reviewing the benchmark to ensure target compliance.
Solution
Configure the router to enforce that IGP instances configured on the OOBM gateway router peer only with their own routing domain.
OS10(config)# ip vrf OOBM
OS10(conf-vrf)# exit
OS10(config)# ip vrf PROD
OS10(conf-vrf)# exit
OS10(config)# router ospf 1 vrf OOBM
OS10(config-router-ospf-1)# router-id 77.0.0.10
OS10(config-router-ospf-1)# exit
OS10(config)# router ospf 2 vrf PROD
OS10(config-router-ospf-2)# router-id 88.0.0.88
OS10(config-router-ospf-2)# exit