The ESXi host must configure the firewall to block network traffic by default.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-207656 | ESXI-65-000057 | SV-207656r388482_rule | Medium |
| Description |
|---|
| In addition to service specific firewall rules ESXi has a default firewall rule policy to allow or deny incoming and outgoing traffic. Reduce the risk of attack by making sure this is set to deny incoming and outgoing traffic. |
| STIG | Date |
|---|---|
| VMware vSphere 6.5 ESXi Security Technical Implementation Guide | 2021-09-22 |
Details
| Check Text ( C-7911r364367_chk ) |
|---|
| From a PowerCLI command prompt while connected to the ESXi host run the following command: Get-VMHostFirewallDefaultPolicy If the Incoming or Outgoing policies are True, this is a finding. |
| Fix Text (F-7911r364368_fix) |
|---|
| From a PowerCLI command prompt while connected to the ESXi host run the following command: Get-VMHostFirewallDefaultPolicy | Set-VMHostFirewallDefaultPolicy -AllowIncoming $false -AllowOutgoing $false |