The Cisco out-of-band management (OOBM) gateway router must be configured to have separate IGP instances for the managed network and management network.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-96747	CISC-RT-000420	SV-105885r1_rule		Medium

Description
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 Interior Gateway Protocol routing instances is critical on the router to segregate traffic from each network.

STIG	Date
Cisco IOS XR Router RTR Security Technical Implementation Guide	2019-12-20

Details

Check Text ( C-95583r1_chk )
This requirement is not applicable for the DODIN Backbone. Verify that the OOBM interface is an adjacency in the IGP domain for the management network via separate VRF as shown in the example below. router ospf 2 vrf MGMT area 0 interface GigabitEthernet0/0/0/0.2 ! ! ! ! router ospf 3 vrf PROD area 0 interface GigabitEthernet0/0/0/0.3 ! ! ! ! If the router is not configured to have separate IGP instances for the managed network and management network, this is a finding.

Check Text ( C-95583r1_chk )

This requirement is not applicable for the DODIN Backbone.

Verify that the OOBM interface is an adjacency in the IGP domain for the management network via separate VRF as shown in the example below.

router ospf 2
vrf MGMT
area 0
interface GigabitEthernet0/0/0/0.2
!
!
!
!
router ospf 3
vrf PROD
area 0
interface GigabitEthernet0/0/0/0.3
!
!
!
!

If the router is not configured to have separate IGP instances for the managed network and management network, this is a finding.

Fix Text (F-102425r1_fix)
This requirement is not applicable for the DODIN Backbone. Configure the router to have a separate IGP instance for the management network as shown in the example below. RP/0/0/CPU0:R2(config)#router ospf 2 vrf MGMT RP/0/0/CPU0:R2(config-ospf-vrf)#area 0 RP/0/0/CPU0:R2(config-ospf-vrf-ar)#interface GigabitEthernet0/0/0/0.2 RP/0/0/CPU0:R2(config-ospf-vrf-ar-if)#exit RP/0/0/CPU0:R2(config-ospf-vrf-ar)#exit RP/0/0/CPU0:R2(config-ospf-vrf)#exit RP/0/0/CPU0:R2(config-ospf)#exit RP/0/0/CPU0:R2(config)#router ospf 3 vrf PROD RP/0/0/CPU0:R2(config-ospf-vrf)#area 0 RP/0/0/CPU0:R2(config-ospf-vrf-ar)#interface GigabitEthernet0/0/0/0.3 RP/0/0/CPU0:R2(config-ospf-vrf-ar-if)#end

Fix Text (F-102425r1_fix)

This requirement is not applicable for the DODIN Backbone.

Configure the router to have a separate IGP instance for the management network as shown in the example below.

RP/0/0/CPU0:R2(config)#router ospf 2 vrf MGMT
RP/0/0/CPU0:R2(config-ospf-vrf)#area 0
RP/0/0/CPU0:R2(config-ospf-vrf-ar)#interface GigabitEthernet0/0/0/0.2
RP/0/0/CPU0:R2(config-ospf-vrf-ar-if)#exit
RP/0/0/CPU0:R2(config-ospf-vrf-ar)#exit
RP/0/0/CPU0:R2(config-ospf-vrf)#exit
RP/0/0/CPU0:R2(config-ospf)#exit
RP/0/0/CPU0:R2(config)#router ospf 3 vrf PROD
RP/0/0/CPU0:R2(config-ospf-vrf)#area 0
RP/0/0/CPU0:R2(config-ospf-vrf-ar)#interface GigabitEthernet0/0/0/0.3
RP/0/0/CPU0:R2(config-ospf-vrf-ar-if)#end