Title

The Cisco ACI out-of-band management (OOBM) must be configured to not redistribute routes between the management network routing domain and the managed network routing domain. (Cat II impact)

Discussion

If the gateway router is not a dedicated device for the OOBM network, several safeguards must be implemented for containment of management and production traffic boundaries; otherwise, it is possible management traffic will not be separated from production traffic. Since the managed network and the management network are separate routing domains, separate Interior Gateway Protocol routing instances must be configured on the router, one for the managed network and one for the OOBM network. In addition, the routes from the two domains must not be redistributed to each other. To configure out-of-band management access on a Cisco APIC using the API: 1. Navigate to Tenants >> mgmt. 2. Expand "Quick Start" and select Out-of-Band Management Access >> Configure Out-of-Band Management Access. 3. Here, define the nodes in the OOB network, their IP addresses, allowed subnets for external hosts, and communication filters to control access, essentially creating a dedicated network for managing the devices outside the primary production network.

Check Content

If this review is for the DODIN Backbone, mark as not applicable. Verify redistribution is disabled on the OOB routing instance: router bgp 100 // Management network routing instance redistribute static route-map deny redistribute connected route-map deny redistribute connected route-map deny If redistribute is not disabled for the OOB instance, this is a finding.

Fix Text

Disable redistribution on the OOB routing instance: router bgp 100 // Management network routing instance redistribute static route-map deny redistribute connected route-map deny redistribute connected route-map deny

Additional Identifiers

Rule ID: SV-272072r1064475_rule

Vulnerability ID: V-272072

Group Title: SRG-NET-000019-RTR-000012

Expert Comments

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