Check: CISC-RT-000430
Cisco IOS XE Router RTR STIG:
CISC-RT-000430
(in versions v2 r9 through v1 r1)
Title
The Cisco out-of-band management (OOBM) gateway router 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 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 (IGP) 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.
Check Content
This requirement is not applicable for the DODIN Backbone. Verify the IGP instance used for the managed network does not redistribute routes into the IGP instance used for the management network, and vice versa. The example below imports OSPF routes from the production route table (VRF PROD) into the management route table (VRF MGMT) using BGP. ip vrf MGMT rd 4:4 route-target export 4:4 route-target import 4:4 route-target import 8:8 ! ip vrf PROD rd 8:8 route-target import 8:8 route-target export 8:8 … … … router ospf 1 vrf MGMT log-adjacency-changes redistribute bgp 64512 subnets network 0.0.0.0 255.255.255.255 area 0 ! router ospf 2 vrf PROD log-adjacency-changes network 0.0.0.0 255.255.255.255 area 0 ! router bgp 64512 no synchronization bgp log-neighbor-changes no auto-summary ! address-family ipv4 vrf MGMT no synchronization redistribute ospf 1 vrf MGMT exit-address-family ! address-family ipv4 vrf PROD no synchronization redistribute ospf 2 vrf PROD exit-address-family If the IGP instance used for the managed network redistributes routes into the IGP instance used for the management network, or vice versa, this is a finding.
Fix Text
This requirement is not applicable for the DODIN Backbone. Remove the configuration that imports routes from the managed network into the management network or vice versa as shown in the example below: R1(config)#ip vrf MGMT R1(config-vrf)#no route-target import 8:8
Additional Identifiers
Rule ID: SV-216681r531086_rule
Vulnerability ID: V-216681
Group Title: SRG-NET-000019-RTR-000012
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-001414 |
The information system enforces approved authorizations for controlling the flow of information between interconnected systems based on organization-defined information flow control policies. |
Controls
Number | Title |
---|---|
AC-4 |
Information Flow Enforcement |