The vCenter Server must have Mutual Challenge Handshake Authentication Protocol (CHAP) configured for vSAN Internet Small Computer System Interface (iSCSI) targets.
An XCCDF Rule
Description
When enabled, vSphere performs bidirectional authentication of both the iSCSI target and host. When not authenticating both the iSCSI target and host, the potential exists for a man-in-the-middle attack in which an attacker might impersonate either side of the connection to steal data. Bidirectional authentication mitigates this risk.
- ID
- SV-258953r934517_rule
- Version
- VCSA-80-000286
- Severity
- Medium
- References
- Updated
Remediation Templates
A Manual Procedure
From the vSphere Client, go to Host and Clusters.
Select a vSAN Enabled Cluster >> Configure >> vSAN >> iSCSI Target Service.
For each iSCSI target, select the item and click "Edit".
Change the "Authentication" field to "Mutual CHAP" and configure the incoming and outgoing users and secrets appropriately.