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The Cisco perimeter router must be configured to not redistribute static routes to an alternate gateway service provider into BGP or an Interior Gateway Protocol (IGP) peering with the NIPRNet or to other autonomous systems.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-216668CISC-RT-000300SV-216668r1117237_ruleCCI-001414low
Description
If the static routes to the alternate gateway are being redistributed into an Exterior Gateway Protocol or Interior Gateway Protocol to a NIPRNet gateway, this could make traffic on NIPRNet flow to that particular router and not to the Internet Access Point routers. This could not only wreak havoc with traffic flows on NIPRNet, but it could overwhelm the connection from the router to the NIPRNet gateway(s) and also cause traffic destined for outside of NIPRNet to bypass the defenses of the Internet Access Points.
STIGDate
Cisco IOS XE Router RTR Security Technical Implementation Guide2025-08-14

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 (7) 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-3Access Enforcement
1.00
AC-4Information Flow Enforcement
1.00
AC-6(9)Log Use of Privileged Functions
1.00
AU-12Audit Record Generation
1.00
CM-7Least Functionality
1.00
SC-5Denial-of-service Protection
1.00
SC-7(5)Deny by Default — Allow by Exception
1.00
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-001414
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-216668r1117237_chk)

This requirement is not applicable for the DODIN Backbone. Step 1: Review the IGP and BGP configurations. If there are redistribute static statements configured as shown in examples below, proceed to step 2. OSPF Example: router ospf 1 log-adjacency-changes redistribute static subnets network 0.0.0.0 255.255.255.255 area 0 EIGRP example: router eigrp 1 network 10.1.15.0 0.0.0.255 redistribute static RIP example: router rip version 2 redistribute static network 10.0.0.0 BGP example: router bgp nn no synchronization bgp log-neighbor-changes redistribute static neighbor x.11.1.7 remote-as nn neighbor x.11.1.7 password xxxxxxx no auto-summary Step 2: Review the static routes that have been configured to determine if any contain the next hop address of the alternate gateway. If the static routes to the alternate gateway are being redistributed into BGP or any IGP peering to a NIPRNet gateway or any other autonomous system, this is a finding.

Fix Text (F-17899r287962_fix)

This requirement is not applicable for the DODIN Backbone. Configure the router so that static routes are not redistributed to an alternate gateway into either a BGP or any IGP peering with the NIPRNet or to any other autonomous systems. This can be done by excluding that route in the route-map as shown in the example below: Step 1: Configure a prefix list for any static routes with the alternate gateway as the next-hop address. R5(config)#ip prefix-list ISP_PREFIX permit x.x.x.0/24 Step 2: Configure a route map that will deny the state routes to the ISP. R5(config)#route-map FILTER_ISP_STATIC deny 10 R5(config-route-map)#match ip address prefix-list ISP_PREFIX R5(config-route-map)#exit R5(config)#route-map FILTER_ISP_STATIC permit 20 R5(config-route-map)#exit Step 3: Apply the route-map to the IGP and BGP redistribute static commands as shown in the EIGRP example. R5(config)#router eigrp 1 R5(config-router)#redistribute static route-map FILTER_ISP_STATIC