ARST-RT-000200 - The out-of-band management (OOBM) Arista gateway router must be configured to not redistribute routes between the management network routing domain and the managed network routing domain.

Information

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 that 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.

NOTE: Nessus has provided the target output to assist in reviewing the benchmark to ensure target compliance.

Solution

This requirement is not applicable for the DODIN backbone.

Configure the Interior Gateway Protocol instance used for the managed network to prohibit redistribution of routes into the Interior Gateway Protocol instance used for the management network and vice versa.

PROD IGP Routing Domain:

Step 1: Configure the interface.

interface Et3/17/1
description To_PROD
ip address 10.1.12.1/24

Step 2: Configure the OSPF process to remove the IGP redistribution.

router ospf 100
network 10.1.0.0/24 area 0.0.0.0
no redistribute rip

OOBM IGP Routing Domain, running on the management network

Step 3: Configure the interface.

interface Et3/17/1
description To_OOBM
ip address 172.16.10.1/24

Step 4: Configure the RIP process to remove the IGP redistribution.

router rip
network 172.16.10.0/24
no redistribute ospf
no shutdown

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Arista_MLS_EOS_4-2x_Y24M07_STIG.zip

Item Details

Category: ACCESS CONTROL

References: 800-53|AC-4, CAT|II, CCI|CCI-001414, Rule-ID|SV-256006r882360_rule, STIG-ID|ARST-RT-000200, Vuln-ID|V-256006

Plugin: Arista

Control ID: 49555ef5f119fe699913bef3e6c8a36dc45d359a5e869d2ecc7016b2cb58b63c