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Disable the Mapper I/O Driver.


Overview

Finding ID Version Rule ID IA Controls Severity
V-15696 5.200 SV-25138r1_rule Medium
Description
This check verifies that the Mapper I/O network protocol driver is disabled.
STIG Date
Windows 7 Security Technical Implementation Guide 2018-02-12

Details

Check Text ( C-15384r1_chk )
If the following registry values don’t exist or are not configured as specified, this is a finding:

Registry Hive: HKEY_LOCAL_MACHINE
Subkey: \Software\Policies\Microsoft\Windows\LLTD\

Value Name: AllowLLTDIOOndomain
Value Name: AllowLLTDIOOnPublicNet
Value Name: EnableLLTDIO
Value Name: ProhibitLLTDIOOnPrivateNet

Type: REG_DWORD
Value: 0
Fix Text (F-15588r1_fix)
Configure the policy value for Computer Configuration -> Administrative Templates -> Network -> Link-Layer Topology Discovery “Turn on Mapper I/O (LLTDIO) driver” to “Disabled”.