In this example, no connection-specific DNS domain names are configured for the computer. If you rename the computer from "oldhost" to "newhost", the following name changes occur: Computer name: newhost DNS domain name of computer: example. After the name change is applied in System Properties , Windows prompts you to restart the computer. The client computer uses the currently configured FQDN of the computer, such as " newhost.
For standard primary zones, the primary server, or owner, that is returned in the SOA query response is fixed and static. The primary server name always matches the exact DNS name as that name is displayed in the SOA resource record that is stored with the zone.
However, if the zone that is being updated is directory-integrated, any DNS server that is loading the zone can respond and dynamically insert its own name as the primary server of the zone in the SOA query response. The client processes the SOA query response for its name to determine the IP address of the DNS server that is authorized as the primary server for accepting its name.
If it is required, the client performs the following steps to contact and dynamically update its primary server:. The client sends a dynamic update request to the primary server that is determined in the SOA query response.
If this update fails, the client next sends an NS-type query for the zone name that is specified in the SOA record. When the client receives a response to this query, the client sends an SOA query to the first DNS server that is listed in the response.
After the SOA query is resolved, the client sends a dynamic update to the server that is specified in the returned SOA record. If this update fails, the client repeats the SOA query process by sending to the next DNS server that is listed in the response.
After the primary server that can perform the update is contacted, the client sends the update request, and the server processes it. The contents of the update request include instructions to add A, and possibly PTR, resource records for " newhost. The server also checks to make sure that updates are permitted for the client request. For standard primary zones, dynamic updates are not secured. Any client attempt to update succeeds.
For Active Directory-integrated zones, updates are secured and performed using directory-based security settings. Dynamic updates are sent or refreshed periodically. By default, computers send an update every twenty-four hours. If the update causes no changes to zone data, the zone remains at its current version, and no changes are written.
Updates that cause actual zone changes or increased zone transfers occur only if names or addresses actually change. Names are not removed from DNS zones if they become inactive or if they are not updated within the update interval of twenty-four hours. DNS does not use a mechanism to release or to tombstone names, although DNS clients do try to delete or to update old name records when a new name or address change is applied. This value determines how long other DNS servers and clients cache a computer's records when they are included in a query response.
Scope clients can use the DNS dynamic update protocol to update their host name-to-address mapping information whenever changes occur to their DHCP-assigned address. This mapping information is stored in zones on the DNS server. This enables the client to notify the DHCP server as to the service level it requires.
In this case, the option is processed and interpreted by Windows Server-based DHCP servers to determine how the server initiates updates on behalf of the client.
This is the default configuration for Windows. To configure the DHCP server to register client information according to the client's request, follow these steps:.
By default, updates are always performed for newly installed Windows Server-based DHCP servers and any new scopes that you create for them. The following examples show how this process varies in different cases. For these DHCP clients, updates are typically handled in the following manner:. After you integrate a zone, you can use the access control list ACL editing features that are available in the DNS snap-in to add or to remove users or groups from the ACL for a specific zone or for a resource record.
For more information, search for the "To modify security for a resource record" topic or the "To modify security for a directory integrated zone" topic in Windows Server Help. By default, dynamic update security for Windows Server DNS servers and clients is handled in the following manner:. Windows Server-based DNS clients try to use nonsecure dynamic updates first.
If the nonsecure update is refused, clients try to use a secure update. Also, clients use a default update policy that lets them to try to overwrite a previously registered resource record, unless they are specifically blocked by update security. By default, when you use standard zone storage, the DNS Server service does not enable dynamic updates on its zones. Do I need to remove the registry change after I apply the security update? Under what circumstances would I consider using the registry key workaround?
Will this workaround affect any other TCP based network communications? Need more help? Expand your skills. Get new features first. Was this information helpful? Yes No. Thank you! Any more feedback?
The more you tell us the more we can help. Can you help us improve? Resolved my issue. Clear instructions. Easy to follow. No jargon. Pictures helped. Didn't match my screen. Incorrect instructions. DNS records could be static or dynamic. On Microsoft DNS servers, there are three possible configurations for dynamic updates: None : No dynamic updates are allowed.
The DNS zone records management need to be done manually. Nonesecure and secure : Dynamic updates are accepted without checking if the source of updates is trusted or not. Secure only : Dynamic updates are accepted only from trusted sources. This is a not recommended option. This prevents having them updated by any authenticated user. This is the recommended option and is required to have secure dynamic updates working when your DHCP server is collocated on a domain controller.
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