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V-286556

CAT II (Medium)

The Aviat WTM must not use the default VLAN for management traffic.

Rule ID

SV-286556r1274094_rule

STIG

Aviat Networks WTM L2 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. As a consequence, 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

Verify the Aviat WTM does not use the default VLAN (VLAN 1) for management traffic with the following steps:

1. Log on to the Web UI using an admin account.
2. Using the Web UI, navigate to Switching and Routing >> VLAN Management >> Membership.
3. For each management port, verify the access VLAN is not set to VLAN 1.

If any management port is assigned to VLAN 1, this is a finding.

Fix Text

Configure the Aviat WTM to remove VLAN 1 from all management ports with the following steps:

1. Log on to the Web UI using an admin account.
2. Using the Web UI, navigate to Switching and Routing >> VLAN Management >> Membership.
3. For each management port assigned to VLAN 1, change the access VLAN to the management VLAN.
4. Click "Commit".