STIGQter: STIG Summary: Arista MLS EOS 4.X Router Security Technical Implementation Guide Version: 2 Release: 2 Benchmark Date: 02 Apr 2025:

The out-of-band management (OOBM) Arista gateway router must be configured to not redistribute routes between the management network routing domain and the managed network routing domain.

DISA Rule

SV-256006r882360_rule

Vulnerability Number

V-256006

Group Title

SRG-NET-000019-RTR-000012

Rule Version

ARST-RT-000200

Severity

CAT II

CCI(s)

• CCI-001414 - Enforce approved authorizations for controlling the flow of information between connected systems based on organization-defined information flow control policies.

Weight

10

Fix Recommendation

This requirement is not applicable for the DODIN backbone.

Configure the Interior Gateway Protocol instance used for the managed network to prohibit redistribution of routes into the Interior Gateway Protocol instance used for the management network and vice versa.

PROD IGP Routing Domain:

Step 1: Configure the interface.

interface Et3/17/1
description To_PROD
ip address 10.1.12.1/24

Step 2: Configure the OSPF process to remove the IGP redistribution.

router ospf 100
network 10.1.0.0/24 area 0.0.0.0
no redistribute rip

OOBM IGP Routing Domain, running on the management network

Step 3: Configure the interface.

interface Et3/17/1
description To_OOBM
ip address 172.16.10.1/24

Step 4: Configure the RIP process to remove the IGP redistribution.

router rip
network 172.16.10.0/24
no redistribute ospf
no shutdown

Check Contents

This requirement is not applicable for the DODIN backbone.

Verify the Interior Gateway Protocol instance used for the managed network does not redistribute routes into the Interior Gateway Protocol instance used for the management network and vice versa.

PROD IGP Routing Domain:

Step 1: To verify interfaces and vrf instance are configured, execute the command "show run int YY".

interface Et3/17/1
description To_PROD
ip address 10.1.12.1/24

Step 2: Verify the OSPF configuration, the PROD subnet is advertised, and IGP redistribution is removed in the OSPF process. To verify the OSPF configuration, execute the command "show run section router ospf".

router ospf 100 vrf PROD
network 10.1.0.0/24 area 0.0.0.0
no redistribute rip

OOBM IGP Routing Domain, running on the management network

Step 3: To verify interfaces are configured, execute the command "show run int YY".

interface Et3/17/2
description To_OOBM
ip address 172.16.10.1/24

Step 4: Verify the RIP configuration, the OOBM subnet is advertised, and IGP redistribution is removed in the RIP process. To verify the RIP configuration, execute the command "show run section router rip".

router rip
network 172.16.10.0/24
no redistribute ospf
no shutdown

If the Interior Gateway Protocol instance used for the managed network redistributes routes into the Interior Gateway Protocol instance used for the management network or vice versa, this is a finding.

Vulnerability Number

V-256006

Documentable

False

Rule Version

ARST-RT-000200

Severity Override Guidance

This requirement is not applicable for the DODIN backbone.

Verify the Interior Gateway Protocol instance used for the managed network does not redistribute routes into the Interior Gateway Protocol instance used for the management network and vice versa.

PROD IGP Routing Domain:

Step 1: To verify interfaces and vrf instance are configured, execute the command "show run int YY".

interface Et3/17/1
description To_PROD
ip address 10.1.12.1/24

Step 2: Verify the OSPF configuration, the PROD subnet is advertised, and IGP redistribution is removed in the OSPF process. To verify the OSPF configuration, execute the command "show run section router ospf".

router ospf 100 vrf PROD
network 10.1.0.0/24 area 0.0.0.0
no redistribute rip

OOBM IGP Routing Domain, running on the management network

Step 3: To verify interfaces are configured, execute the command "show run int YY".

interface Et3/17/2
description To_OOBM
ip address 172.16.10.1/24

Step 4: Verify the RIP configuration, the OOBM subnet is advertised, and IGP redistribution is removed in the RIP process. To verify the RIP configuration, execute the command "show run section router rip".

router rip
network 172.16.10.0/24
no redistribute ospf
no shutdown

If the Interior Gateway Protocol instance used for the managed network redistributes routes into the Interior Gateway Protocol instance used for the management network or vice versa, this is a finding.

Check Content Reference

M

Target Key

5513