The BGP Cisco ACI must be configured to reject outbound route advertisements for any prefixes belonging to the IP core.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-272080 | CACI-RT-000020 | SV-272080r1113986_rule | CCI-001097 | medium |
| Description | ||||
| Outbound route advertisements belonging to the core can result in traffic either looping or being black holed, or at a minimum, using a nonoptimized path. | ||||
| STIG | Date | |||
| Cisco ACI Router Security Technical Implementation Guide | 2025-06-18 | |||
Related Frameworks
5 paths across 3 frameworks
Related Frameworks
NIST 800-531 mapping
SC-7
1.00
- DISA · 1 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
NIST 800-1713 mappings
3.13.1
1.00
- DISA · 1 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
3.13.2
1.00
- DISA · 1 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
3.13.5
1.00
- DISA · 1 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
CCI1 mapping
CCI-001097
1.00
- DISA · 1 · disa_xccdf · related
Details
Check Text (C-272080r1113986_chk)
If this review is for the DODIN Backbone, mark as not applicable.
Verify the router is configured to deny router-advertisements.
apic1(config-tenant-fhs-secpol)# router-advertisement-guard
If the router is not configured to reject outbound route advertisements for prefixes belonging to the IP core, this is a finding.
Fix Text (F-76037r1063636_fix)
Configure the router with FHS to suppress Router Advertisements on all external IPv6-enabled interfaces as shown in the example below. View the FHS requirement in the Layer 2 STIG.
apic1(config-tenant-fhs-secpol)# router-advertisement-guard