Overview

LanGuard may not be able to access the domain controller in domains with dis-joined domain names.

Environment 

• GFI LanGuard
• Windows Domain Environment

Root Cause

LanGuard uses flattened domain names.

Resolution

GFI LanGuard 12:

With GFI LanGuard 12 an automated detection of domains was added; however, if LanGuard has been set up to manage machines in multiple domains, other domains than the one LanGuard itself is in, may need to be added manually.

For this please add the following item within the <Items> tag of the "DomainNameTwist":

<Category Name="DomainNameTwist">
<Items>
<Item Name="AutomaticMappingOfDomains"><![CDATA[NETBIOS1#$$#DNS1.DOMAIN.TLD#;;#]]></Item>
<Item Name="ManualMappingOfDomains"><![CDATA[NETBIOS2#$$#DNS2.DOMAIN.TLD#;;#]]></Item>
</Items>
</Category> 

Should it be necessary to add multiple domains manually please use the following format:

<Item Name="ManualMappingOfDomains"><![CDATA[NETBIOS2#$$#DNS2.DOMAIN.TLD#;;#NETBIOS3#$$#DNS3.DOMAIN.TLD#;;#]]></Item>

GFI LanGuard11:

In GFI LanGuard11 add the following category within the <Categories> tag:

<Category Name="GatherLivePcsOPTwist">
<Items><Item Name="ManualMappingOfDomains"><![CDATA[NETBIOS#$$#DNS.DOMAIN.TLD#;;#]]></Item></Items>
</Category>
<Category Name="ImporterTwist">
<Items><Item Name="ManualMappingOfDomains"><![CDATA[NETBIOS#$$#DNS.DOMAIN.TLD#;;#]]></Item></Items>
</Category> 

Note:

To check the NetBIOS (Network Basic Input/Output System) and the DNS (Domain Name Server) run the following commands in the Command Prompt:

echo %UserDomain%
echo %UserDNSDomain%