STIGQter: STIG Summary: Cisco IOS XE Router RTR Security Technical Implementation Guide Version: 2 Release: 2 Benchmark Date: 23 Apr 2021:

The Cisco perimeter router must be configured to filter egress traffic at the internal interface on an inbound direction.

DISA Rule

SV-216672r531086_rule

Vulnerability Number

V-216672

Group Title

SRG-NET-000205-RTR-000005

Rule Version

CISC-RT-000340

Severity

CAT II

CCI(s)

• CCI-001097 - The information system monitors and controls communications at the external boundary of the information system and at key internal boundaries within the system.

Weight

10

Fix Recommendation

This requirement is not applicable for the DODIN Backbone.

Configure the router to use an inbound ACL on all internal interfaces as shown in the example below:

R5(config)#int g0/2
R5(config-if)#ip access-group EGRESS_FILTER in

Check Contents

This requirement is not applicable for the DODIN Backbone.

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

interface interface GigabitEthernet0/2
description downstream link to LAN
ip address 10.1.25.5 255.255.255.0
ip access-group EGRESS_FILTER in

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-216672

Documentable

False

Rule Version

CISC-RT-000340

Severity Override Guidance

This requirement is not applicable for the DODIN Backbone.

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

interface interface GigabitEthernet0/2
description downstream link to LAN
ip address 10.1.25.5 255.255.255.0
ip access-group EGRESS_FILTER in

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

4028

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