Remediation

Please see the additional information about the requirements needed before starting this remediation procedure.

From Azure Portal

1. In the Azure portal, open the portal menu in the upper-left corner.
2. Select Key Vaults.
3. Select a Key Vault to configure.
4. Select Networking in the left column.
5. Select Private endpoint connections from the top row.
6. Select + Create.
7. Select the subscription the Key Vault is in, and any other configuration options.
8. Select Next.
9. For resource type, select Microsoft.KeyVault/vaults.
10. Select the Key Vault to associate the Private Endpoint with.
11. Select Next.
12. In the Virtual Networking field, select the network to assign to the endpoint.
13. Select other configuration options as desired, including an existing or new application security group.
14. Select Next.
15. Select the private DNS that the private endpoint will use.
16. Select Next.
17. Optionally add Tags.
18. Select Next: Review + Create.
19. Review the information and select Create. Follow the Audit procedure to verify that the configuration applied successfully.
20. Repeat steps 3-19 for each Key Vault.

From Azure CLI

1. To create an endpoint, run the following command:

   az network private-endpoint create \
       --resource-group {{resource-group-name}} \
       --vnet-name {{vnet-name}} \
       --subnet {{subnet-name}} \
       --name {{private-endpoint-name}} \
       --private-connection-resource-id "/subscriptions/{{azure-subscription-id}}/resourceGroups/{{resource-group-name}}/providers/Microsoft.KeyVault/vaults/{{key-vault-name}}" \
       --group-ids vault \
       --connection-name {{private-link-connection-name}} \
       --location {{azure-region}} \
       --manual-request
   

2. To manually approve the endpoint request, run the following command:

   az keyvault private-endpoint-connection approve \
       --resource-group {{resource-group-name}} \
       --vault-name {{key-vault-name}} \
       --name {{private-link-name}}

3. Determine the Private Endpoint's IP address to connect the Key Vault to the Private DNS you have previously created.

4. Look for the networkInterfaces property, then id. Use that value as privateEndpointNIC in step 6:

   az network private-endpoint show \
       -g {{resource-group-name}} \
       -n {{private-endpoint-name}}

5. Use the NIC ID to query the private IP address:

   az network nic show --ids {{private-endpoint-nic-id}}

6. Create a Private DNS record within the DNS Zone you created for the Private Endpoint:

   az network private-dns record-set a add-record \
       -g {{resource-group-name}} \
       -z "privatelink.vaultcore.azure.net" \
       -n {{key-vault-name}} \
       -a {{private-endpoint-nic}}

7. Run nslookup for the private endpoint to verify the DNS record:

   nslookup {{key-vault-name}}.vault.azure.net
   nslookup {{key-vault-name}}.privatelink.vaultcore.azure.net