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The Nokia Border Gateway Protocol (BGP) router must be configured to reject inbound route advertisements for any prefixes belonging to the local autonomous system (AS).

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-283908NOKI-RT-000970SV-283908r1203973_ruleCCI-001368medium
Description
Accepting route advertisements belonging to the local AS can result in traffic looping or being black holed, or at a minimum using a nonoptimized path.
STIGDate
Nokia Service Router OS 25.x Router Security Technical Implementation Guide2026-06-15

Related Frameworks

1 mapping across 5 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (17) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AST-04Network Diagrams & Data Flow Diagrams (DFDs)
1.00
AST-04.2Control Applicability Boundary Graphical Representation
1.00
CFG-02Secure Baseline Configurations
1.00
CRY-01Use of Cryptographic Controls
1.00
DCH-01Data Protection
1.00
DCH-19Geographic Location of Data
1.00
END-01Endpoint Device Management (EDM)
1.00
END-04Malicious Code Protection (Anti-Malware)
1.00
END-06Endpoint File Integrity Monitoring (FIM)
1.00
IAC-21Least Privilege
1.00

+7 more (top 10 by confidence shown)

NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (42) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-2(1)Automated System Account Management
1.00
AC-2(10)Shared and Group Account Credential Change
1.00
AC-2(2)Automated Temporary and Emergency Account Management
1.00
AC-2(3)Disable Accounts
1.00
AC-2(4)Automated Audit Actions
1.00
AC-3Access Enforcement
1.00
AC-3(7)Role-based Access Control
1.00
AC-4Information Flow Enforcement
1.00
AC-6(10)Prohibit Non-privileged Users from Executing Privileged Functions
1.00
AC-6(9)Log Use of Privileged Functions
1.00

+32 more (top 10 by confidence shown)

NIST 800-1710 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

3.1.3
1.00
CCI1 mapping
CCI-001368
1.00
NIST CSF 2.00 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (4) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

DE.CM-09
1.00
ID.AM-03
1.00
PR.DS-10
1.00
PR.IR-01
1.00

Who does this work

18 NICE work roles and 10 EC-Council certifications.

This is an inference across published mappings, not a single claim by anyone. This check maps to a control, which maps to a Cybersecurity Framework outcome, which NIST assigns to the work roles below. EC-Council separately maps its certifications to those same roles.

A certification prepares someone for a role. It is not evidence that a holder is qualified, and neither NIST nor EC-Council has stated that any certification here addresses this check.

Work-role assignments published by NIST (NICE Framework Components 2.2.0 and the CSF 2.0 OLIR crosswalk). Certification mappings published by EC-Council.

Details

Check Text (C-283908r1203973_chk)

Review the router configuration to verify it will reject routes belonging to the local AS. Verify the prefix lists using the command below: - show router policy prefix-list "Deny Prefixes" prefix 0.0.0.0/8 prefix-length-range 8-32 prefix 10.13.1.0/24 prefix-length-range 24-32 - show router policy prefix-list "Permit Prefix" prefix 0.0.0.0/0 prefix-length-range 8-32 Verify the policy statement using the command below: - show router policy "IMPORT-BGP-PREFIX" entry 10 from prefix-list "Deny Prefixes" exit action drop exit exit entry 20 from prefix-list "Permit Prefix" exit action accept exit exit default-action drop exit Verify the policy is applied to the eBGP group using the command below: - show router bgp group "eBGP" detail | match "Import Policy" Import Policy : IMPORT-BGP-PREFIX If the router is not configured to reject inbound route advertisements belonging to the local AS, this is a finding.

Fix Text (F-88378r1203972_fix)

Ensure all eBGP routers are configured to reject inbound route advertisements for any prefixes belonging to the local AS. Create prefix lists using the configuration below: - configure router policy-options - config>router>policy-options# prefix-list "Deny Prefixes" - config>router>policy-options>prefix-list$ prefix 0.0.0.0/8 prefix-length-range 8-32 - config>router>policy-options>prefix-list$ prefix 10.13.1.0/24 prefix-length-range 24-32 - config>router>policy-options>prefix-list$ exit - config>router>policy-options# prefix-list "Permit Prefix" - config>router>policy-options>prefix-list# prefix 0.0.0.0/0 prefix-length-range 8-32 Create a policy statement using the configuration below: - config>router>policy-options# policy-statement "IMPORT-BGP-Prefix" - config>router>policy-options>policy-statement# entry 10 - config>router>policy-options>policy-statement>entry$ from prefix-list "Deny Prefixes" - config>router>policy-options>policy-statement>entry$ action drop - config>router>policy-options>policy-statement>entry>action$ exit - config>router>policy-options>policy-statement>entry$ exit - config>router>policy-options>policy-statement# entry 20 - config>router>policy-options>policy-statement>entry$ from prefix-list "Permit Prefix" - config>router>policy-options>policy-statement>entry$ action accept - config>router>policy-options>policy-statement>entry>action$ exit - config>router>policy-options>policy-statement>entry$ exit - config>router>policy-options>policy-statement# default-action drop - config>router>policy-options>policy-statement>default-action# exit - config>router>policy-options>policy-statement# exit - config>router>policy-options# commit - config>router>policy-options# exit all Apply the policy to the eBGP group using the configuration below: - configure router bgp group "eBGP" import "IMPORT-BGP-Prefix"