STIGQter: STIG Summary: Juniper EX Series Switches Router Security Technical Implementation Guide Version: 2 Release: 1 Benchmark Date: 24 Jul 2024:

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

DISA Rule

SV-253991r844006_rule

Vulnerability Number

V-253991

Group Title

SRG-NET-000019-RTR-000010

Rule Version

JUEX-RT-000190

Severity

CAT III

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 router so that static routes are not redistributed to an alternate gateway into either an Exterior Gateway Protocol or Interior Gateway Protocol to the NIPRNet or to other autonomous systems.
set policy-options policy-statement <policy name> term 1 from protocol static
set policy-options policy-statement <policy name> term 1 then reject

set protocols bgp group <group name> export <policy name>
set protocols bgp group <group name> neighbor <address> export <policy name>
set protocols bgp export <policy name>

set protocols ospf export <policy name>
set protocols ospf3 export <policy name>

Check Contents

This requirement is not applicable for the DODIN Backbone.

Review the configuration of the router connecting to the alternate gateway and verify that redistribution of static routes to the alternate gateway is not occurring. Juniper routers use export policies to limit redistribution of routes. Verify a policy exists to filter route redistribution.

[edit policy-options]
policy-statement <name> {
term 1 {
from protocol static;
then reject;
}
}

Verify the export policy is applied to the EGP and/or IGP protocol.
[edit protocols]
bgp {
export <policy-name>;
group <group name> {
type external;
export <policy-name>;
neighbor <address> {
export <policy-name>;
}
}
ospf {
export <policy name>;
}
ospf3 {
export <policy name>;
}
}

Note: BGP supports export statements at the protocol level (global), the group level, and the neighbor level. Only the most specific policy is applied.

If the static routes to the alternate gateway are being redistributed into BGP or any IGP peering with a NIPRNet gateway or another autonomous system, this is a finding.

Vulnerability Number

V-253991

Documentable

False

Rule Version

JUEX-RT-000190

Severity Override Guidance

This requirement is not applicable for the DODIN Backbone.

Review the configuration of the router connecting to the alternate gateway and verify that redistribution of static routes to the alternate gateway is not occurring. Juniper routers use export policies to limit redistribution of routes. Verify a policy exists to filter route redistribution.

[edit policy-options]
policy-statement <name> {
term 1 {
from protocol static;
then reject;
}
}

Verify the export policy is applied to the EGP and/or IGP protocol.
[edit protocols]
bgp {
export <policy-name>;
group <group name> {
type external;
export <policy-name>;
neighbor <address> {
export <policy-name>;
}
}
ospf {
export <policy name>;
}
ospf3 {
export <policy name>;
}
}

Note: BGP supports export statements at the protocol level (global), the group level, and the neighbor level. Only the most specific policy is applied.

If the static routes to the alternate gateway are being redistributed into BGP or any IGP peering with a NIPRNet gateway or another autonomous system, this is a finding.

Check Content Reference

M

Target Key

5479