Changes are coming to https://stigviewer.com.
Take our survey to help us understand your usage and how we can better serve you in the future.
Take Survey
The ESXi host must configure the firewall to block network traffic by default.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-256418 | ESXI-70-000057 | SV-256418r886035_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 ensuring this is set to deny incoming and outgoing traffic. |
| STIG | Date |
|---|---|
| VMware vSphere 7.0 ESXi Security Technical Implementation Guide | 2023-02-21 |
Details
| Check Text ( C-60093r886033_chk ) |
|---|
| From an ESXi shell, run the following command: # esxcli network firewall get If the "Default Action" does not equal "DROP", this is a finding. or 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-60036r886034_fix) |
|---|
| From an ESXi shell, run the following command: # esxcli network firewall set --default-action=false or From a PowerCLI command prompt while connected to the ESXi host, run the following command: Get-VMHostFirewallDefaultPolicy | Set-VMHostFirewallDefaultPolicy -AllowIncoming $false -AllowOutgoing $false |