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

The Cisco PE router must be configured to ignore or drop all packets with any IP options.

DISA Rule

SV-217001r531086_rule

Vulnerability Number

V-217001

Group Title

SRG-NET-000205-RTR-000016

Rule Version

CISC-RT-000750

Severity

CAT II

CCI(s)

• CCI-002403 - The information system only allows incoming communications from organization-defined authorized sources routed to organization-defined authorized destinations.

Weight

10

Fix Recommendation

Configure the router to ignore or drop all packets with IP options as shown in the examples below:

R4(config)#ip options ignore

or

R4(config)#ip options drop

Check Contents

Review the router configuration to determine if it will ignore or drop all packets with IP options as shown in the examples below:

ip options drop
or
ip options ignore

If the router is not configured to drop or block all packets with IP options, this is a finding.

Vulnerability Number

V-217001

Documentable

False

Rule Version

CISC-RT-000750

Severity Override Guidance

Review the router configuration to determine if it will ignore or drop all packets with IP options as shown in the examples below:

ip options drop
or
ip options ignore

If the router is not configured to drop or block all packets with IP options, this is a finding.

Check Content Reference

M

Target Key

4028

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