That is why Microsoft DNS servers allow dynamic DNS updates but this needs to be enabled with caution as it needs to be done in a secure way. These records are maintained manually and should be administered only by trusted persons.
Securing the updates of static DNS records requires limiting the persons having the rights to update them. On Microsoft DNS servers, there are three possible configurations for dynamic updates:. If enabling Dynamic updates is required for a company, it is highly recommended to use Secure only dynamic updates option.
This is because a DNS update source is considered as trusted only if:. You need to note here that the DHCP servers will not be able to identify if the DHCP client is trusted or not and will request the updates on behalf of its client. This is because, in the ACLs of these records, the clients do not have the permission to update their own records. Skip to main content. This browser is no longer supported.
Download Microsoft Edge More info. Contents Exit focus mode. Please rate your experience Yes No. Any additional feedback? Note This method works for IPv4 scopes only. This section describes how to enable and disable the following lookup registrations:. To disable both forward A resource record and reverse PTR resource record registrations that are performed for all adapters by the DHCP Client service, use the following registry subkey:.
If the check box was checked before the policy was enabled, it will still be checked after the policy is enabled. The registry setting made by the policy is a global setting that affects all interfaces, not an adapter-specific setting. This key disables DNS update registration for all adapters on this computer. With DNS update, DNS client computers automatically register and update their resource records whenever address changes occur.
To disable DNS update for a particular adapter, add the DisableDynamicUpdate value to an interface name registry subkey and set its value to 1. To disable DNS updates on all adapters in a computer, add the DisableDynamicUpdate value to the following subkey, and then set its value to When this registry value is set to 1, the Register this connection's addresses in DNS check box will not reflect the changes made to this registry key. If the check box was selected before the registry change, it will stay selected after this registry change.
This registry setting is not an adapter-specific setting, but a global setting that affects all interfaces. This global setting is not revealed in the user interface. Windows doesn't add this entry to the registry. You can add it by editing the registry or by using a program that edits the registry. When you want forward lookup A resource record registrations but not reverse lookups PTR resource record registrations, use the following registry subkey to disable registrations of PTR resource records:.
PTR resource records associate an IP address with a computer name. This entry is designed for enterprises where the primary DNS server that is authoritative for the reverse lookup zone can't, or is configured not to, perform DNS updates.
It reduces unnecessary network traffic and prevents event log errors that record unsuccessful tries to register PTR resource records. Windows does not add this entry to the registry. Each computer has a primary DNS suffix. Additionally, each adapter can also have a separate DNS suffix that is configured for itself.
This disables DNS update registration on this adapter. For DNS updates to operate on any adapter, it must be enabled at the system level and at the adapter level. To disable DNS updates for a particular adapter, add the DisableDynamicUpdate value to an interface name registry subkey, and then set its value to 1. To disable DNS updates on all adapters in a computer, add the DisableDynamicUpdate value to the following registry subkey, and then set its value to By default, DNS records are re-registered dynamically and periodically every 24 hours.
You can use the following registry subkey to modify the update interval:. This specifies the time interval between DNS update registration updates. To make the changes to this value effective, you must restart Windows. You can use the following registry subkey to modify the TTL value:. By default, only the first IP address is dynamically registered.
You can use the following registry key to modify the number of IP addresses that are dynamically registered for an adapter that is configured with more than one IP address, or is logically multihomed:. This setting determines the maximum number of IP addresses that can be registered in DNS for this adapter. By default, non-secure DNS registrations are tried. You can use the following registry subkey to modify this behavior:.
This determines whether the DNS client uses secure dynamic update or standard dynamic update. Windows supports both dynamic updates and secure dynamic updates. With secure dynamic updates, the authoritative name server accepts updates only from authorized clients and servers.
0コメント