Add-Dns Server Forwarder

Adds server level forwarders to a DNS server.

Syntax

Description

The Add-DnsServerForwarder cmdlet adds one or more forwarders to the forwarders list of a Domain Name System (DNS) server. If you prefer one of the forwarders, put that forwarder first in the series of forwarder IP addresses. After you first use this cmdlet to add forwarders to a DNS server, this cmdlet adds forwarders to the end of the forwarders list.

Examples

Example 1: Add a forwarder to a DNS server by using an IPv6 address

This command adds the IPv6 address 2001:4898:7020:f100:458f:e6a2:fcaf:698c to the list of forwarders on a local DNS server.

Example 2: Add a forwarder to a DNS server by using an IP Address

This command adds the IP address 172.23.90.124 to the list of forwarders on a local DNS server.

Parameters

Runs the cmdlet as a background job. Use this parameter to run commands that take a long time to complete.

The cmdlet immediately returns an object that represents the job and then displays the command prompt. You can continue to work in the session while the job completes. To manage the job, use the *-Job cmdlets. To get the job results, use the Receive-Job cmdlet.

For more information about Windows PowerShell background jobs, see about_Jobs.

Type:	SwitchParameter
Position:	Named
Default value:	None
Accept pipeline input:	False
Accept wildcard characters:	False

Runs the cmdlet in a remote session or on a remote computer. Enter a computer name or a session object, such as the output of a New-CimSession or Get-CimSession cmdlet. The default is the current session on the local computer.

Type:	CimSession [ ]
Aliases:	Session
Position:	Named
Default value:	None
Accept pipeline input:	False
Accept wildcard characters:	False

Specifies a remote DNS server. You can specify an IP address or any value that resolves to an IP address, such as a fully qualified domain name (FQDN), host name, or NETBIOS name.

Type:	String
Aliases:	Cn
Position:	Named
Default value:	None
Accept pipeline input:	False
Accept wildcard characters:	False

Prompts you for confirmation before running the cmdlet.

Type:	SwitchParameter
Aliases:	cf
Position:	Named
Default value:	False
Accept pipeline input:	False
Accept wildcard characters:	False

Specifies an array of IP addresses of DNS servers where queries are forwarded. If you prefer one of the forwarders, put that forwarder first in the series of forwarder IP addresses.

Type:	IPAddress [ ]
Position:	1
Default value:	None
Accept pipeline input:	True
Accept wildcard characters:	False

Returns an object representing the item with which you are working. By default, this cmdlet does not generate any output.

Type:	SwitchParameter
Position:	Named
Default value:	None
Accept pipeline input:	False
Accept wildcard characters:	False

Specifies the maximum number of concurrent operations that can be established to run the cmdlet. If this parameter is omitted or a value of 0 is entered, then Windows PowerShellВ® calculates an optimum throttle limit for the cmdlet based on the number of CIM cmdlets that are running on the computer. The throttle limit applies only to the current cmdlet, not to the session or to the computer.

Type:	Int32
Position:	Named
Default value:	None
Accept pipeline input:	False
Accept wildcard characters:	False

Shows what would happen if the cmdlet runs. The cmdlet is not run.

Set-Dns Server Forwarder

Changes forwarder settings on a DNS server.

Syntax

Description

The Set-DnsServerForwarder cmdlet changes forwarder settings on a Domain Name System (DNS) server. This cmdlet sets or resets IP addresses to which the DNS server forwards DNS queries when it cannot solve them locally. This cmdlet overwrites existing server level forwarders.

Setting IP addresses by using this cmdlet causes the DNS server to perform recursive queries to the DNS servers at the specified IP addresses. By default, the DNS server waits five seconds for a response from one forwarder IP address before it tries another forwarder IP address. You can use the Timeout parameter to change the number of seconds that the DNS server waits. When the server has exhausted all forwarders, it attempts standard recursion. By default, a DNS server performs iterative queries when it cannot resolve a query.

Examples

Example 1: Set a forwarder on a DNS server

This command overwrites the list of existing forwarders on a DNS server and specifies the IP address of a DNS server where queries are forwarded.

Example 2: Disable reordering of forwarders on a DNS server

This command disables dynamic reordering of forwarders on a DNS server.

Parameters

Runs the cmdlet as a background job. Use this parameter to run commands that take a long time to complete.

The cmdlet immediately returns an object that represents the job and then displays the command prompt. You can continue to work in the session while the job completes. To manage the job, use the *-Job cmdlets. To get the job results, use the Receive-Job cmdlet.

For more information about Windows PowerShell background jobs, see about_Jobs.

Type:	SwitchParameter
Position:	Named
Default value:	None
Accept pipeline input:	False
Accept wildcard characters:	False

Runs the cmdlet in a remote session or on a remote computer. Enter a computer name or a session object, such as the output of a New-CimSession or Get-CimSession cmdlet. The default is the current session on the local computer.

Type:	CimSession [ ]
Aliases:	Session
Position:	Named
Default value:	None
Accept pipeline input:	False
Accept wildcard characters:	False

Specifies a remote DNS server. You can specify an IP address or any value that resolves to an IP address, such as a fully qualified domain name (FQDN), host name, or NETBIOS name.

Type:	String
Aliases:	Cn
Position:	Named
Default value:	None
Accept pipeline input:	False
Accept wildcard characters:	False

Prompts you for confirmation before running the cmdlet.

Type:	SwitchParameter
Aliases:	cf
Position:	Named
Default value:	False
Accept pipeline input:	False
Accept wildcard characters:	False

Specifies whether to enable the DNS server to reorder forwarders dynamically.

Type:	Boolean
Position:	Named
Default value:	None
Accept pipeline input:	True
Accept wildcard characters:	False

Specifies an array of IP addresses of DNS servers where queries are forwarded. Specify the forwarders in the order that you want them to be configured.

Type:	IPAddress [ ]
Position:	1
Default value:	None
Accept pipeline input:	True
Accept wildcard characters:	False

Returns an object representing the item with which you are working. By default, this cmdlet does not generate any output.

Type:	SwitchParameter
Position:	Named
Default value:	None
Accept pipeline input:	False
Accept wildcard characters:	False

Specifies the maximum number of concurrent operations that can be established to run the cmdlet. If this parameter is omitted or a value of 0 is entered, then Windows PowerShell® calculates an optimum throttle limit for the cmdlet based on the number of CIM cmdlets that are running on the computer. The throttle limit applies only to the current cmdlet, not to the session or to the computer.

Type:	Int32
Position:	Named
Default value:	None
Accept pipeline input:	False
Accept wildcard characters:	False

Specifies the number of seconds that the DNS server waits for a response from the forwarder. The minimum value is 0, and the maximum value is 15. The default value is 5.

Type:	UInt32
Position:	Named
Default value:	None
Accept pipeline input:	True
Accept wildcard characters:	False

Specifies whether to prevent the DNS server from performing iterative queries. If you set UseRootHint to $false, the DNS server forwards unresolved queries only to the DNS servers in the forwarders list and does not try iterative queries if the forwarders do not resolve the queries.

Type:	Boolean
Position:	Named
Default value:	None
Accept pipeline input:	True
Accept wildcard characters:	False

Shows what would happen if the cmdlet runs. The cmdlet is not run.

How to Set Up a DNS Forwarder in Windows Server 2012 R2

In this article, I will demonstrate you how to configure a DNS forwarder in Windows Server 2012 R2. I assume you have already configured DNS on both servers. If you haven’t, read my other article on configuring DNS on Windows Server 2012 R2.

Prerequisites

Following five are prerequisites:

1. Ensure that the Administrator account has a strong password.
2. A static IP is configured.
3. Latest windows updates are installed.
4. Firewall is turned off.
5. DNS is already configured on both machines (primary DNS and secondary DNS servers).

Setting Up a DNS Forwarder in Windows Server 2012 R2

Step 1: Open server manager dashboard and click on Tools. Scroll down the menu and click on DNS .

Step 2: In DNS manager, right-click and scroll down the menu. Click Properties

Step 3: Click Forwarders tab and then click Edit

Step 4: Enter the IP address of your secondary DNS server you want to forward DNS queries. Click OK

Step 5: Click OK

Step 6: Go to your secondary DNS server manager and expand the machine name. Right-click Forward Look Up Zones and scroll down the menu. Click New Zone

Step 7: Click Next

Step 8: Choose Primary zone and click Next

Step 9: Provide the zone name and click Next

Step 10: Choose to create the zone file with the suggested name and click Next.

Step 11: Select «Do not allow Dynamic Updates» and click Next.

Step 12: Click Finish to create the new DNS zone.

Step 13: Right-click the zone you just created and scroll down the menu. Click New Host (A or AAAA)

Step 14: Provide the name and IP address of this host and click Add Host

Step 15: Click OK to create the A-Record in the DNS zone.

Step 16: Go to your client machine and configure the DNS settings. Provide the IP address of your primary DNS server in Preferred DNS server field