The BGP router 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-207138 | SRG-NET-000205-RTR-000006 | SV-207138r604135_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 non-optimized path. | ||||
| STIG | Date | |||
| Router Security Requirements Guide | 2024-05-28 | |||
Related Frameworks
5 paths across 3 frameworks
Related Frameworks
NIST 800-531 mapping
SC-7
1.00
- DISA · 5 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
NIST 800-1713 mappings
3.13.1
1.00
- DISA · 5 · 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 · 5 · 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 · 5 · 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 · 5 · disa_xccdf · related
Details
Check Text (C-207138r604135_chk)
Review the router configuration to verify that there is a filter defined to block route advertisements for prefixes that belong to the IP core.
The prefix filter must be referenced outbound on the appropriate BGP neighbor statements.
If the router is not configured to reject outbound route advertisements that belong to the IP core, this is a finding.
Fix Text (F-7399r382353_fix)
Configure all eBGP routers to filter outbound route advertisements belonging to the IP core.