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

Severity
Group ID
Group Title
Version
Rule ID
Date
STIG Version
mediumV-214936SRG-OS-000480-GPOS-00227WN19-00-000280SV-214936r991589_rule2025-02-253
Description
A firewall provides a line of defense against attack, allowing or blocking inbound and outbound connections based on a set of rules.
ℹ️ Check
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.
✔️ Fix
Install and enable a host-based firewall on the system.