STIGQter: STIG Summary: VMware vSphere 7.0 ESXi Security Technical Implementation Guide Version: 1 Release: 4 Benchmark Date: 02 Apr 2025:

The ESXi host must configure the firewall to block network traffic by default.

DISA Rule

SV-256418r959010_rule

Vulnerability Number

V-256418

Group Title

SRG-OS-000480-VMM-002000

Rule Version

ESXI-70-000057

Severity

CAT II

CCI(s)

• CCI-000366 - Implement the security configuration settings.

Weight

10

Fix Recommendation

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

Check Contents

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.

Vulnerability Number

V-256418

Documentable

False

Rule Version

ESXI-70-000057

Severity Override Guidance

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.

Check Content Reference

M

Target Key

5518