The Windows DNS Server must protect the authenticity of zone transfers via transaction signing.

An XCCDF Rule

Description

<VulnDiscussion>Without identifying devices, unidentified or unknown devices may be introduced, thereby facilitating malicious activity. This applies to server-to-server (zone transfer) transactions and is provided by TSIG/SIG(0), which enforces mutual server authentication using a key that is unique to each server pair, TSIG, or using PKI-based authentication, SIG(0), thus uniquely identifying the other server. TSIG and SIG(0) are not configurable in Windows DNS Server. To meet the requirement for authentication between Windows DNS Servers, IPsec will be implemented between the Windows DNS Servers that hosts any non-Active Directory (AD)-integrated zones.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>

ID: SV-259389r945324_rule
Severity: Medium
References: CCI-001184
Updated: 9 months ago

Complete the following procedures twice for each pair of name servers.
 
Create a rule for UDP connections and then create a rule for TCP connections.
 
Refer to the Microsoft Windows Server DNS Overview.pdf for Microsoft links for this procedure.
Log on to the DNS server using the Domain Admin or Enterprise Admin account or Local Administrator account.

Press the Windows key + R and execute "gpme.msc" to open the Group Policy Management feature.

In the "Browse for Group Policy Object" dialog box, double-click "Domain Controllers.domain.com".

Click "Default Domain Controllers Policy" and click "OK".

In the console tree, open Computer Configuration\Policies\Windows Settings\Security Settings\Windows Defender Firewall with Advanced Security\Windows Defender Firewall with Advanced Security - Local Group Policy Object.

Right-click "Connection Security Rules" and select "New".

For "Rule Type", select the "Server-to-server" radio button and click "Next".

For Endpoint 1 and Endpoint 2, select "These IP addresses:" and add the IP addresses of all DNS servers. Click "Next".

For "Requirements", select "Request authentication for inbound and outbound connections" and click "Next".

For "Authentication Method", select Computer certificate and from the "Signing Algorithm:" drop-down, select "RSA (default)".

From the "Certificate store type:" drop-down, select "Root CA (default).

From "CA name:", click "Browse" and select the certificate generated by the internally managed server performing the AD CS role. Click "Next".

On "Profile", accept the default selections and click "Next".

On "Name", enter a name applicable to the rule's function (i.e., DNSSEC UDP).

Click "Finish".

The Windows DNS Server must protect the authenticity of zone transfers via transaction signing.

Description

Remediation - Manual Procedure