Windows Server 2019 must have a host-based firewall installed and enabled.

A firewall provides a line of defense against attack, allowing or blocking inbound and outbound connections based on a set of rules.

Determine if a host-based firewall is installed and enabled on the system.

If a host-based firewall is not installed and enabled on the system, this is a finding.

The configuration requirements will be determined by the applicable firewall STIG.

Install and enable a host-based firewall on the system.