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 be configured to filter ingress traffic at the external interface on an inbound direction.

DISA Rule

SV-254013r844072_rule

Vulnerability Number

V-254013

Group Title

SRG-NET-000205-RTR-000004

Rule Version

JUEX-RT-000410

Severity

CAT II

CCI(s)

• CCI-001097 - Monitor and control communications at the external managed interfaces to the system and at key managed interfaces within the system.

Weight

10

Fix Recommendation

This requirement is not applicable for the DODIN Backbone.

Bind the ingress firewall filter to the external interface (inbound).

set interfaces <external interface name> unit <number> family inet filter input inbound-ipv4
set interfaces <external interface name> unit <number> family inet6 filter input inbound-ipv6

Check Contents

This requirement is not applicable for the DODIN Backbone.

Review the router configuration to verify that the ingress firewall filter is bound to the external interface in an inbound direction.

[edit interfaces]
<external interface> {
unit <number> {
family inet {
filter {
input inbound-ipv4;
}
}
family inet6 {
filter {
input inbound-ipv6;
}
}
}
}

Note: Some Juniper devices support both monolithic filters and filter lists. Filter lists separate each term, or set of terms, into a separate filter that is applied sequentially to an interface. If using filter lists, the keywords "input" or "output" change to "input-list" or "output-list". Verify the final list item is a deny-all filter. The deny-all filter is created once per family and can be reused across multiple lists. For example:

input-list [ permit_mgt permit_routing_protocols default-deny ];

If the router is not configured to filter traffic entering the network at the external interface in an inbound direction, this is a finding.

Vulnerability Number

V-254013

Documentable

False

Rule Version

JUEX-RT-000410

Severity Override Guidance

This requirement is not applicable for the DODIN Backbone.

Review the router configuration to verify that the ingress firewall filter is bound to the external interface in an inbound direction.

[edit interfaces]
<external interface> {
unit <number> {
family inet {
filter {
input inbound-ipv4;
}
}
family inet6 {
filter {
input inbound-ipv6;
}
}
}
}

Note: Some Juniper devices support both monolithic filters and filter lists. Filter lists separate each term, or set of terms, into a separate filter that is applied sequentially to an interface. If using filter lists, the keywords "input" or "output" change to "input-list" or "output-list". Verify the final list item is a deny-all filter. The deny-all filter is created once per family and can be reused across multiple lists. For example:

input-list [ permit_mgt permit_routing_protocols default-deny ];

If the router is not configured to filter traffic entering the network at the external interface in an inbound direction, this is a finding.

Check Content Reference

M

Target Key

5479