SV-224853r958478: Simple TCP/IP Services must not be installed. | Microsoft Windows Server 2016 STIG SCAP Benchmark

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Assessment Title

Rule Text

Simple TCP/IP Services must not be installed.

Description

Discussion Text

Unnecessary services increase the attack surface of a system. Some of these services may not support required levels of authentication or encryption or may provide unauthorized access to the system.

How this relates to the STIG checklist: STIG vs SCAP benchmark.

IA Controls

NIST SP 800-53

Not mappedCCI-000381SV-87945V-73293

References

DPMS Target Microsoft Windows Server 2016 DISA DPMS Target Microsoft Windows Server 2016 4205

Checks

DISA STIG (Manual Reference)

Open "PowerShell".

Enter "Get-WindowsFeature | Where Name -eq Simple-TCPIP".

If "Installed State" is "Installed", this is a finding.

An Installed State of "Available" or "Removed" is not a finding.

SCC Automation Reference

The reconstructed evaluation script behind this rule's OVAL check(s) — every module a compound check combines, with this rule's own concrete values and DISA's SCC tool's real per-module mechanism curated from static teardown of SCC releases.

# Windows PowerShell
# Reconstructed from oval:mil.disa.stig.windows:def:1044
# Simple TCP/IP Services must not be installed.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# Check to make sure the Simple TCP/IP Services server feature is not present.
# wmi57_object (wmi57_test)
function test_1 {
  return (-not ($null -ne (Get-CimInstance -Namespace 'root\cimv2' -Query 'SELECT startmode FROM Win32_Service WHERE name='simptcp'')))
}
# Check to make sure the Simple TCP/IP Services server feature is disabled.
# wmi57_object (wmi57_test)
function test_2 {
  return (((Get-CimInstance -Namespace 'root\cimv2' -Query 'SELECT startmode FROM Win32_Service WHERE name=''simptcp''' | Select-Object -First 1) | Select-Object -ExpandProperty 'startmode') -eq 'Disabled')
}

if ((test_1 -or test_2)) {
  Write-Output "PASS"
} else {
  Write-Output "FAIL"
}

Assessment Script Powered by AISyntax-verified

A standalone PowerShell script to assess this control automatically. Review before running it in your environment.

Syntax-checked as valid PowerShell. Not executed here — running it for real needs the actual ms_windows_server_2016 target this check assesses.

# OVAL Definition: oval:mil.disa.stig.windows:def:1044
if (!(Get-CimInstance -ClassName Win32_Service -Filter "Name='simptcp'")) { Write-Output "PASS"; Exit 0 } else { if (@(Get-CimInstance -ClassName Win32_Service -Filter "Name='simptcp'").StartMode -ne "Disabled") { Write-Output "FAIL"; Exit 1 } } Write-Output "PASS"; Exit 0

Remediation

Uninstall the "Simple TCP/IP Services" feature.

Start "Server Manager".

Select the server with the feature.

Scroll down to "ROLES AND FEATURES" in the right pane.

Select "Remove Roles and Features" from the drop-down "TASKS" list.

Select the appropriate server on the "Server Selection" page and click "Next".

Deselect "Simple TCP/IP Services" on the "Features" page.

Click "Next" and "Remove" as prompted.