← Back to Dell OS10 Switch Layer 2 Switch Security Technical Implementation Guide

V-269969

CAT II (Medium)

The Dell OS10 Switch must not use the default VLAN for management traffic.

Rule ID

SV-269969r1052293_rule

STIG

Dell OS10 Switch Layer 2 Switch Security Technical Implementation Guide

Version

V1R1

CCIs

CCI-000366

Discussion

Switches use the default VLAN (i.e., VLAN 1) for in-band management and to communicate with directly connected switches using Spanning-Tree Protocol (STP), Dynamic Trunking Protocol (DTP), VLAN Trunking Protocol (VTP), and Port Aggregation Protocol (PAgP)—all untagged traffic. Therefore, the default VLAN may unwisely span the entire network if not appropriately pruned. If its scope is large enough, the risk of compromise can increase significantly.

Check Content

Review the OS10 switch configuration and verify that the default VLAN is not used to access the switch for management:

interface vlan30
 description "Management VLAN"
 no shutdown
 ip address 10.10.1.1/24

If the default VLAN is being used to access the switch, this is a finding.

Fix Text

Configure the switch for management access to use a VLAN other than the default VLAN:

OS10(config)# interface vlan 30
OS10(conf-if-vl-30)# description "Management VLAN"
OS10(conf-if-vl-30)# ip address 10.10.1.1/24
OS10(conf-if-vl-30)# no shutdown