STIGQter: STIG Summary: Cisco IOS Switch L2S Security Technical Implementation Guide Version: 2 Release: 1 Benchmark Date: 23 Apr 2021:

The Cisco switch must have IP Source Guard enabled on all user-facing or untrusted access switch ports.

DISA Rule

SV-220634r539671_rule

Vulnerability Number

V-220634

Group Title

SRG-NET-000362-L2S-000026

Rule Version

CISC-L2-000140

Severity

CAT II

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

Fix Recommendation

Configure the switch to have IP Source Guard enabled on all user-facing or untrusted access switch ports:

SW2(config)#int range g0/0 - 9
SW2(config-if-range)#ip verify source

Check Contents

Review the switch configuration to verify that IP Source Guard is enabled on all user-facing or untrusted access switch ports as shown in the example below:

interface GigabitEthernet0/0
ip verify source
!
interface GigabitEthernet0/1
ip verify source
…
…
…
interface GigabitEthernet0/9
ip verify source

Note: The IP Source Guard feature depends on the entries in the DHCP snooping database or static IP-MAC-VLAN configuration commands to verify IP-to-MAC address bindings.

If the switch does not have IP Source Guard enabled on all untrusted access switch ports, this is a finding.

The Cisco switch must have IP Source Guard enabled on all user-facing or untrusted access switch ports.

DISA Rule

Vulnerability Number

Group Title

Rule Version

Severity

CCI(s)

Weight

Fix Recommendation

Check Contents

Vulnerability Number

Documentable

Rule Version

Severity Override Guidance

Check Content Reference

Target Key

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