Common Event Log Messages 7. Understanding Name Server Statistics 7. Aging and Scavenging 7. Configuring Aging and Scavenging 7. When Scavenging Occurs 7. Other Notes on Aging and Scavenging 8. Integrating with Active Directory 8. Active Directory Domains 8. Domains, Domain Trees, and Forests 8. Domain Models 8. Three Options for the Root Domain Name 8. Same name as an existing DNS domain 8. Subdomain of an existing DNS domain 8.
Disjoint or private name 8. Storing Zones in Active Directory 8. The Impact on Replication 8. Using Application Partitions 8. Securing Dynamic Updates 8. DC Locator 8. Resource Records Used by Active Directory 9. Growing Your Domain 9. How Many Name Servers? Capacity Planning 9. Adding More Name Servers 9. Active Directory Integration 9. Secondary Servers 9.
Caching-Only Servers 9. Partial-Secondary Servers 9. Registering Name Servers 9. Changing TTLs 9. Planning for Disasters 9. Outages 9. Recommendations 9.
Coping with Disaster 9. Long Outages Days 9. Really Long Outages Weeks Parenting When to Become a Parent How Many Children? What to Name Your Children How to Become a Parent: Creating Subdomains Creating and Delegating a Subdomain An fx. On the movie. Delegating an in-addr. Adding a movie. Subdomains of in-addr. Subnetting on an Octet Boundary Subnetting on a Nonoctet Boundary Class A and B networks Solution 1 Solution 2 Solution 3 Good Parenting Using DNSLint Managing Delegation Managing delegation with stubs Managing the Transition to Subdomains Removing Parent Aliases The Life of a Parent Advanced Features and Security New Ways to Make Changes Dynamic Update Incremental Zone Transfer More Efficient Zone Transfers WINS Linkage Load Sharing Between Mirrored Servers IPv6 Forward and Reverse Mapping Securing Your Name Server Preventing Unauthorized Zone Transfers Disabling Recursion on Delegated Name Servers Is nslookup a Good Tool?
Here are some things you can do to troubleshoot DNS. Here are some problems that you might encounter with the Windows DNS service and the steps that you need to take to correct them. These extensions allow for the transfer of DNS packets in excess of bytes, which was the restriction imposed by RFC When Windows Server contacts a remote DNS server, this capability is negotiated and enabled if both ends support it, resulting in DNS record sets of a size greater than bytes.
Unfortunately, some firewalls have trouble with this enhancement as they are configured to drop DNS packets in excess of bytes. As you can imagine, this will result in significant problems with DNS servers on opposite sides of the firewall!
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Also, objects that are created by the members of the DnsUpdateProxy group are not secure. Therefore, you cannot use this group effectively in an Active Directory-integrated zone that enables only secure dynamic updates unless you take additional steps to enable records that are created by members of the group to be secured. To help protect against nonsecure records or to enable members of the DnsUpdateProxy group to register records in zones that enable only secured dynamic updates, follow these steps:.
A dedicated user account is a user account whose sole purpose is to supply DHCP servers with credentials for DNS dynamic update registrations. Assume that you have created a dedicated user account and configured DHCP servers with the account credentials. The dedicated user account should be created in the forest where the primary DNS server for the zone to be updated resides.
The dedicated user account can also be located in another forest. However, the forest that the account resides in must have a forest trust established with the forest that contains the primary DNS server for the zone to be updated. When the DHCP Server service is installed on a domain controller, you can configure the DHCP server by using the credentials of the dedicated user account to prevent the server from inheriting, and possibly misusing, the power of the domain controller.
When the DHCP Server service is installed on a domain controller, it inherits the security permissions of the domain controller. The service also has the authority to update or delete any DNS record that is registered in a secure Active Directory-integrated zone.
This includes records that were securely registered by other Windows-based computers, and by domain controllers. The dynamic update functionality that is included in Windows follows RFC By default, the name that is used in the DNS registration is a concatenation of the computer name and the primary DNS suffix.
Right-click the connection that you want to configure, and then click Properties. This default configuration causes the client to request that the client register the A resource record and the server register the PTR resource record.
If the DHCP server is configured to register DNS records according to the client's request, the client registers the following records:.
To configure the client to make no requests for DNS registration, click to clear the Register this connection's address in DNS check box. A client is multihomed if it has more than one adapter and an associated IP address.
If you do not want the client to register all its IP addresses, you can configure it not to register one or more IP addresses in the network connection properties. You can also configure the computer to register its domain name in DNS.
For example, if you have a client that is connected to two different networks, you can configure the client to have a different domain name on each network. Click to select the Enable DNS dynamic updates according to the settings below check box to enable DNS dynamic update for clients that support dynamic update. This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully.
For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base: How to back up and restore the registry in Windows. By default, dynamic updates are configured on Windows Server-based clients.
To disable dynamic updates for all network interfaces, follow these steps:. Click Start , click Run , type regedit , and then click OK.
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