Understanding DNS Aging and Scavenging

Understanding DNS Aging and Scavenging

DNS servers running Windows Server 200x support aging and scavenging features. These features are provided as a means for performing cleanup and removal of stale resource records in the DNS …

What is the Active Directory Schema?

What is the Active Directory Schema?

The main purpose of the Active Directory (AD) schema is to simply define objects that can be stored in AD. The schema is a list of definitions that determines what …

DNS Client Settings for Domain Controllers

DNS Client Settings for Domain Controllers

There are generally a few designs regarding DNS client settings for Active Directory Domain Controllers. The preferred DNS client configuration depends on the design of your Active Directory infrastructure. Only One Domain …

Metadata Cleanup for Active Directory 2008

Metadata Cleanup for Active Directory 2008

In Active Directory 2008 and 2008 R2, you can easily clean up metadata by using Ntdsutil.exe. Ntdsutil is a command-line tool that is found on Domain Controllers and computers that …

Service Location (SRV) Resource Records

Service Location (SRV) Resource Records

DNS servers must provide support for Service Location (SRV) resource records described in RFC 2052 in order for Active Directory to function properly. SRV resource records map the name of …

Using Single Label DNS Names for Active Directory

Using Single Label DNS Names for Active Directory

Prior to Active Directory, Windows NT Domain names were not fully qualified, but rather simply, single-label names. For Active Directory, it is not recommended to use a single label domain …

Delete PTR Records with Uppercase Characters

Deleting PTR Records with Uppercase Characters

DNS PTR Records In a DNS reverse lookup zone, your PTR (Pointer) records should not contain any uppercase characters. If they do, you may not be able to delete these …

Active Directory Search Limit

Active Directory Search Limit

By default, the search results when querying Active Directory are limited. This limit affects all browse displays associated with Active Directory, the Active Directory Users and Computers (ADUC) management console, …

Common Active Directory User Attributes

Common Active Directory User Attributes

Here is a listing of common Active Directory user attributes that can be easily queried using a variety of methods such as VB, C#, or even VBScript. Once you learn …

What are Active Directory Global Catalog Servers?

What are Active Directory Global Catalog Servers?

In the Active Directory (AD) Forest model, a service is needed to provide information about objects that live in the forest. That is where the Global Catalog server comes into …

DNS Records and Security

DNS Records and Security

It is important to understand how clients update their DNS records dynamically to prevent issues where the process fails due to poor management of your DNS zones and records. Many …

Enabling NAT on Windows Server 2008 R2

Enabling NAT on Windows Server 2008 R2

In computer networking, network address translation (NAT) is the process where a network device, usually a perimeter router or firewall, maps a public, routable IP address to a private IP …

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