How to install Subordiante CA in Windows Server 2012 R2

In the post,Will show you how to install Subordinate CA where you have already have Enterprise ROOT-CA available in the domain.
Ideally, When you install Subirdiante CA Under ROOT-CA is called 2-Tier PKI Infrastructure. Many Organizations they use 2-Tier Method to avoid abnormal down due to the Servers, Threats and Vulnerability.

ROOT-CA or Offline-CA will be in the out of network and kept in Isolated network to avoid the missusing of the Certificate Services.

Subordinate-CA or issueing CA will be used to issue the Certificates to the Computers, Users and Websites.

I cover here how to install Subordinate-CA, Please refer the article to learn how to install ROOT-CA.

Install Certificate Service role from the Server Manager and Click on Configure Active Directory Certificate Services on the destination server

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Select the Enterprise account of the domain which allowed to Install the certificate Services and Click on Next
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Select Certificate Authority and Click on Next 

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Select Enterprise CA and Click on  Next4

Select Subordinate CA and Click on Next

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Select Create a new private key and Click on Next6

Click on Next after selecting the Cryptographic Options

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Give the Name for the CA and Click on Next

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Majority of CA Administrators will keep the ROOT-CA Servers in offline or isolated network, hence generate the request for and save it in the location system

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Select the Database Location and Log Location paths and Click on Next

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Click on Configure

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Now CA is ready to configure, What we need to take that reuqest file to the ROOT-CA Server and get the certificate. Click on Close.12

Copy the request for from the Saved path to the ROOT-CA Server Manually.13

Login in to ROOT-CA–>Right click on ROOT-CA–> All Tasks-->Submit new request

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Select the Request file and click on Open

15You will get the certificate to save in the shared path to take it to the Subordinate CA Server once submitted,

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Now, Click on Certificate Authority in the Subordinate CA Server
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Click on Install CA Certificate

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Select the Certificate from the Shared path and click on Open25

Click on Start Service26

 

Click on Properties once service started successfully.

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You can see the Certificate got installed and ready to issue certificates from the Subordinate CA.

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