Vulnerability V-259363

Note: This requirement applies to any Windows DNS Server that hosts non-AD-integrated zones, even if the DNS servers host AD-integrated zones, too. 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. Click "Connection Security Rules". Confirm at least one rule is configured for TCP 53. Double-click on each rule to verify the following: On the "Authentication" tab, "Authentication mode:" is set to "Request authentication for inbound and outbound connections". The "Signing Algorithm" is set to "RSA (default)". On the "Remote Computers" tab, "Endpoint1" and "Endpoint2" are configured with the IP addresses of all DNS servers. On the "Protocols and Ports" tab, "Protocol type:" is set to either TCP (depending on which rule is being reviewed) and the "Endpoint 1 port:" is set to "Specific ports" and "53". If no rules are configured with the specified requirements, this is a finding.

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".