STIGQter: STIG Summary: Cisco IOS XR Router RTR Security Technical Implementation Guide Version: 2 Release: 1 Benchmark Date: 23 Oct 2020:

The Cisco router must be configured to have IP directed broadcast disabled on all interfaces.

DISA Rule

SV-216745r531087_rule

Vulnerability Number

V-216745

Group Title

SRG-NET-000362-RTR-000112

Rule Version

CISC-RT-000160

Severity

CAT III

CCI(s)

• CCI-002385 - The information system protects against or limits the effects of organization-defined types of denial of service attacks by employing organization-defined security safeguards.

Weight

10

Fix Recommendation

Disable IP directed broadcast on all interfaces as shown in the example below.

RP/0/0/CPU0:R3(config)#int g0/0/0/1
RP/0/0/CPU0:R3(config-if)#no ipv4 directed-broadcast

Check Contents

Review the router configuration to determine if it is compliant with this requirement. IP directed broadcast command must not be found on any interface as shown in the example below.

interface GigabitEthernet0/0/0/1
ipv4 address x.11.1.2 255.255.255.252
ipv4 directed-broadcast

If IP directed broadcast is not disabled on all interfaces, this is a finding.

Vulnerability Number

V-216745

Documentable

False

Rule Version

CISC-RT-000160

Severity Override Guidance

Review the router configuration to determine if it is compliant with this requirement. IP directed broadcast command must not be found on any interface as shown in the example below.

interface GigabitEthernet0/0/0/1
ipv4 address x.11.1.2 255.255.255.252
ipv4 directed-broadcast

If IP directed broadcast is not disabled on all interfaces, this is a finding.

Check Content Reference

M

Target Key

4029

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