The Juniper out-of-band management (OOBM) gateway must be configured to transport management traffic to the Network Operations Center (NOC) via dedicated circuit, MPLS/VPN service, or IPsec tunnel.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-254018	JUEX-RT-000460	SV-254018r997528_rule		Medium

Description
Using dedicated paths, the OOBM backbone connects the OOBM gateway routers located at the edge of the managed network and at the NOC. Dedicated links can be deployed using provisioned circuits or MPLS layer 2 and layer 3 VPN services or implementing a secured path with gateway-to-gateway IPsec tunnels. The tunnel mode ensures that the management traffic will be logically separated from any other traffic traversing the same path.

Description

Using dedicated paths, the OOBM backbone connects the OOBM gateway routers located at the edge of the managed network and at the NOC. Dedicated links can be deployed using provisioned circuits or MPLS layer 2 and layer 3 VPN services or implementing a secured path with gateway-to-gateway IPsec tunnels. The tunnel mode ensures that the management traffic will be logically separated from any other traffic traversing the same path.

STIG	Date
Juniper EX Series Switches Router Security Technical Implementation Guide	2024-06-10

Details

Check Text ( C-57470r844085_chk )
This requirement is not applicable for the DODIN Backbone. Review the network topology diagram to determine connectivity between the managed network and the NOC. Review the OOBM gateway router configuration to validate the path and interface that the management traffic traverses. MPLS-based VPN (L2 or L3) must have a working provider MPLS network including routing (for reachability) and Label Switched Paths (LSP). Additionally, the PE router will maintain separation for each CE router in individual routing instances. If using a dedicated circuit, verify the interface transporting NOC traffic is properly connected. CE routers will not peer with PE routers when using L2 VPN. Verify the CE router peers with the appropriate CE router, generally with an IGP (e.g., OSPF), and not the PE router. [edit interfaces] { unit { family inet { address /; } } } lo0 { unit 0 { family inet { address /32; } } } [edit protocols ospf] area { interface lo0.0; interface .; } CE routers will peer with PE routers, generally with eBGP, when using L3 VPN. Verify the CE router advertises the appropriate interior networks to the PE. [edit interfaces] :0 { unit { family inet { address /; } } } lo0 { family inet { address /; } } [edit routing-options] router-id ; autonomous-system ; [edit protocols bgp] group PE1 { type external; export ; peer-as ; neighbor ; << Reachable from the exterior interface } [edit policy-options policy-statement ] term 1 { from { protocol ; << Include the appropriate protocol (e.g., 'direct' for directly connected routes) route-filter / ; << Include only interior routes that must be advertised to the L3 VPN } then accept; } Note: The policy-statement is applied as an export filter, using a route-filter to limit the exported routes. For example, assume 192.0.2.0/24 is the advertised route, and that it is directly connected. Using "protocol direct" will export all directly-connected routes, but no routes learned via an IGP (e.g., OSPF). Using "route-filter 192.0.2.0/24 orlonger then accept" will accept that /24 (or longer mask) and deny all others. Verify the match condition is appropriate for the desired advertisement. If management traffic is not transported between the managed network and the NOC via dedicated circuit, MPLS/VPN service, or IPsec tunnel, this is a finding.

Check Text ( C-57470r844085_chk )

This requirement is not applicable for the DODIN Backbone.

Review the network topology diagram to determine connectivity between the managed network and the NOC.

Review the OOBM gateway router configuration to validate the path and interface that the management traffic traverses. MPLS-based VPN (L2 or L3) must have a working provider MPLS network including routing (for reachability) and Label Switched Paths (LSP). Additionally, the PE router will maintain separation for each CE router in individual routing instances. If using a dedicated circuit, verify the interface transporting NOC traffic is properly connected.

CE routers will not peer with PE routers when using L2 VPN. Verify the CE router peers with the appropriate CE router, generally with an IGP (e.g., OSPF), and not the PE router.
[edit interfaces]
{
unit {
family inet {
address /;
}
}
}
lo0 {
unit 0 {
family inet {
address /32;
}
}
}
[edit protocols ospf]
area {
interface lo0.0;
interface .;
}

CE routers will peer with PE routers, generally with eBGP, when using L3 VPN. Verify the CE router advertises the appropriate interior networks to the PE.
[edit interfaces]
:0 {
unit {
family inet {
address /;
}
}
}
lo0 {
family inet {
address /;
}
}
[edit routing-options]
router-id ;
autonomous-system ;
[edit protocols bgp]
group PE1 {
type external;
export ;
peer-as ;
neighbor ; << Reachable from the exterior interface
}
[edit policy-options policy-statement ]
term 1 {
from {
protocol ; << Include the appropriate protocol (e.g., 'direct' for directly connected routes)
route-filter / ; << Include only interior routes that must be advertised to the L3 VPN
}
then accept;
}

Note: The policy-statement is applied as an export filter, using a route-filter to limit the exported routes. For example, assume 192.0.2.0/24 is the advertised route, and that it is directly connected. Using "protocol direct" will export all directly-connected routes, but no routes learned via an IGP (e.g., OSPF). Using "route-filter 192.0.2.0/24 orlonger then accept" will accept that /24 (or longer mask) and deny all others. Verify the match condition is appropriate for the desired advertisement.

If management traffic is not transported between the managed network and the NOC via dedicated circuit, MPLS/VPN service, or IPsec tunnel, this is a finding.

Fix Text (F-57421r844086_fix)
This requirement is not applicable for the DODIN Backbone. CE peering to CE (L2 VPN): set interfaces unit family inet address / set interfaces lo0 unit 0 family inet address /32 set protocols ospf area interface lo0.0 set protocols ospf area interface CE peering to PE (L3 VPN): set system host-name ce1 set interfaces : description "Link from CE1 to PE1 for L3vpn" set interfaces : unit family inet address / set interfaces lo0 unit 0 family inet address /32 set routing-options router-id set routing-options autonomous-system set protocols bgp group type external set protocols bgp group export set protocols bgp group peer-as set protocols bgp group neighbor set policy-options policy-statement term 1 from protocol set policy-options policy-statement term 1 from route-filter set policy-options policy-statement term 1 then accept Ensure that a dedicated circuit, MPLS/VPN service, or IPsec tunnel is deployed to transport management traffic between the managed network and the NOC.

Fix Text (F-57421r844086_fix)

This requirement is not applicable for the DODIN Backbone.

CE peering to CE (L2 VPN):
set interfaces unit family inet address /
set interfaces lo0 unit 0 family inet address /32
set protocols ospf area interface lo0.0
set protocols ospf area interface

CE peering to PE (L3 VPN):
set system host-name ce1
set interfaces : description "Link from CE1 to PE1 for L3vpn"
set interfaces : unit family inet address /
set interfaces lo0 unit 0 family inet address /32
set routing-options router-id
set routing-options autonomous-system
set protocols bgp group type external
set protocols bgp group export
set protocols bgp group peer-as
set protocols bgp group neighbor
set policy-options policy-statement term 1 from protocol
set policy-options policy-statement term 1 from route-filter
set policy-options policy-statement term 1 then accept

Ensure that a dedicated circuit, MPLS/VPN service, or IPsec tunnel is deployed to transport management traffic between the managed network and the NOC.