Cross-Forest Trust Relationships - OES Domain Services for Windows Administration Guide
Aug 13, DNS forwarders are necessary to get forest level trust relationships working properly. Users can forward DNS between the two forests in the. Apr 16, In Windows Server, a Conditional Forwarder allows an organization to Conditional Forwarders are a DNS feature introduced in Windows Server In order to configure the trust relationship name resolution need to be. Every trust relationship between each domain in the different forests must be Configuring the DNS Forwarders on the Domain Services for Windows . If the Active Directory forest's Forest Functional Level is not Windows Server , do the.
Select Forward as the Zone Type. A message indicates that the zone has been created. Authoritative answers can be found from: Click Close to close the window and then click OK.
Deselect the Store the zone in Active Directory option.
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Specify the Network IP and click Finish. The zone is now created.
Right-click the newly created zone to create a PTR record and enter the required details. Click Close, then click OK. Right-click the DSfW domain, then select Properties.
Click Next to start creating a new trust. Select Forest trust, then click Next.
To select the direction of trust, do one of the following: Click Two-way to create a two-way forest trust. Select Both this domain and the specified domain and click Next.
Specify the user name and password of the Active Directory domain administrator, then click Next. Select Forest-wide authentication to authorize users to use resources in the local forest or those identified by the administrator, then click Next. Select Forest-wide authentication to authenticate Active Directory forest users to use resources in the dsfw. Review the trust settings and complete the creation of trust by clicking Next. Click any option depending on your choice, then click Next.
DNS Conditional Forwarding in Windows Server 2003
If however, when you promoted your server to a domain controller, your machine was connected to the Internet, then Windows contacts the first available Internet root name server and downloads a list of all Internet root name servers, which becomes its list of root hints.
In that case name resolution now continues as follows: SRV sends an iterative query to the first available Internet root name server, which responds with the IP address of a name server authoritative for the.Rejoin computer into domain without reboot
SRV sends a second iterative query to the name server authoritative for. SRV sends a third iterative query to the name server authoritative for google. SRV returns the IP address of www. Now that's a lot of steps, and if the company has a slow WAN link to the Internet then you're using valuable bandwidth. A better approach than "going up to root" to resolve www. A forwarder is a name server that handles name queries that can't be resolved by another name server.
DNS Conditional Forwarding in Windows Server
Let's see how the above scenario works when a forwarder is configured on the internal name server SRV On the forwarders list it finds the IP address of the external name server hosted by the company's Internet Service Provider, so it forwards the query to the ISP's name server to handle.
The ISP's name server goes up to root as needed which can involve two or more additional queries to resolve www.
SRV returns the address to Bob and he sees Google appear in his browser. Note that this procedure takes about the same number of steps as before, but most of these steps are performed offsite by the ISP's name server, so the amount of bandwidth used over the Internet connection is considerably less and the processing load on the internal name server SRV is minimized as well.
And these are good things from an administrator's perspective.
Configuring DNS forwarders to support Windows Server 2003 forest trusts
Of course, if the forwarder doesn't respond within the timeout configured, the server can either try another forwarder if configured or use root hints if available or give up and return an error.
What's different in Windows Server is the concept of conditional forwarding, which I'll look at next. What Conditional Forwarding Does A conditional forwarder is one that handles name resolution only for a specific domain. For example, you could configure your name server to forward any requests for hosts in the domain google.