WriteAuthorityNs

HKLM\SYSTEM\CurrentControlSet\Services\DNS\Parameters

Data type

Range

Default value

REG_DWORD

0 | 1

0

Description

Determines when the Domain Name System (DNS) server writes NS (name server) records in the Authority section of a response. This entry prevents the DNS server from writing unnecessary NS records in the Authority section, and it ensures that the DNS server complies with relevant Requests for Comments (RFCs).

Value

Meaning

0

The DNS server writes NS records in the Authority section of referrals only. This setting complies with RFC 1034, Domain names—concepts and facilities, and with RFC 2181, Clarifications to the DNS Specification.

1

The DNS server writes NS records in the Authority section of all successful authoritative responses. These NS records are neither required nor useful.

Change method

To change the value of this entry, use Dnscmd.exe, a tool included with the Windows 2000 Support Tools. The change is effective immediately; you do not have to restart the DNS server.

Activation method

DNS reads its registry entries only when it starts. You can change entries while the DNS server is running by using Dnscmd.exe. If you change entries by editing the registry, the changes are not effective until you restart the DNS server.

Note Image Note

The default value is optimal for most DNS servers. Providing NS records in the Authority section consumes processor time and network bandwidth, and it is not recommended unless a network application or service requires it.

Windows 2000 does not add this entry to the registry. You can add it by editing the registry or by using a program that edits the registry.