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 egress traffic at the internal interface on an inbound direction.

DISA Rule

SV-254014r844075_rule

Vulnerability Number

V-254014

Group Title

SRG-NET-000205-RTR-000005

Rule Version

JUEX-RT-000420

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.

Configure an egress firewall filter bound to the internal interface in an inbound direction to filter traffic leaving the network.

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

Check Contents

This requirement is not applicable for the DODIN Backbone.

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

[edit interfaces]
<internal interface> {
unit <number> {
family inet {
filter {
input outbound-ipv4;
}
}
family inet6 {
filter {
input outbound-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 leaving the network at the internal interface in an inbound direction, this is a finding.

Vulnerability Number

V-254014

Documentable

False

Rule Version

JUEX-RT-000420

Severity Override Guidance

This requirement is not applicable for the DODIN Backbone.

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

[edit interfaces]
<internal interface> {
unit <number> {
family inet {
filter {
input outbound-ipv4;
}
}
family inet6 {
filter {
input outbound-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 leaving the network at the internal interface in an inbound direction, this is a finding.

Check Content Reference

M

Target Key

5479