The Windows DNS Server must uniquely identify the other DNS server before responding to a server-to-server transaction.

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 only 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 host 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-259363r945270_rule
Severity: Medium
References: CCI-000778
Updated: 9 months ago

Complete the following procedures twice for each pair of name servers.

Create a rule for TCP connections.

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 Firewall with Advanced Security\Windows Firewall with Advanced Security - LDAP.

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 the "CA name:", click "Browse", select the certificate for the CA, and click "Next".

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

On "Name", enter a name applicable to the rule's function.

Click "Finish".

The Windows DNS Server must uniquely identify the other DNS server before responding to a server-to-server transaction.

Description

Remediation - Manual Procedure