Introduction

Committed Index Certificate Services (AD CS) is the Microsoft implementation of public key infrastructure (PKI). PKI deals with the components and processes for issuing and managing digital certificates that are used for encryption and certification. It is not mandatory to
apply AD CS as part of a Windows Server 2008 Committed Index structure. Even if, many organizations find it useful to deploy this service internally rather than relying on an external provider.
AD CS is the component of Windows Server 2008 that can be used to issue and manage digital certificates. The digital certificates issued by AD CS can be used for encrypting file system (EFS), e-mail encryption, secure sockets layer (SSL), and certification. A server with AD CS installed is referred to as a certification authority (CA).
Digital certificates are used for lop-sided encryption, which requires two keys. The first key is the private key, which is securely stored by the user or computer that a digital certificate has been issued to. The second key is the public key that is distributed to other users and
computers. The data encrypted by one key can only be decrypted by the other key. This relationship ensures safeguard of the encrypted data. Each key is sufficiently generous to preclude computation of the private key via possession of the public key.

How to apply AD CS

AD CS is a complex product with various options for implementations. The implementation options for root and subordinate CAs vary, and you need to be aware of the process for each. Web enrollment is commonly used in many environments and must be configured. You must also manage certificate revocation by using either certificate revocation lists or OCSP. Finally, you must be aware of how to go key archival and recovery.
I believe best practice is, and I’m sure a name will right me if I’m ill-treat, to set up an Enterprise Root CA (Certificate Authority), then set up one or more subordinate CA’s.  You can then make your Root CA unavailable for access and have the subordinates handle all of the traffic without dread of compromising your Root CA.  In this tutorial, we’ll just be installing and configuring a Root CA, but the process is basically the same for the subordinates.
Now that you’ve got some background information, onto the installation/configuration of Windows Server 2008 R2 Certificate Services.
In ‘Server Manager’, select Roles in the left pane, then Add Roles in the right pane.  Place a check mark in the checkbox for Committed Index Certificate Services.  Then click Next.

On the ‘Introduction to Committed Index Certificate Services’ window, you can read up on the certificate services technology, how to manage a CA, and naming.  Click Next.
On the ‘Select Role Services’ page, make sure Certification Authority is selected, then selectCertification Authority Web Enrollment, when the ‘Add Roles Wizard’ window appears click the Add Vital Role Services button.  Click Next.




On the ‘Specify Setup Type’ page, leave Enterprise selected.  Click Next.  On the ‘Specify CA Type’ page, leave Root CA selected and click Next.  On the ‘Set Up Private Key’ page, leaveInitiation a new private key selected and click Next.
On the Configure Cryptography for CA page, you can leave the defaults selected or adjust as necessary for your needs.  You can also pause here and research the providers and hashes as necessary, but for this tutorial and most environments, the default will be enough.  ClickNext.


On the ‘Configure CA Name’ page, set the common name to the same as the server name since this server is a domain controller.  This is an acceptable practice.  Leave the ‘Distinguished name suffix’ alone.  Click Next.


On the ‘Set Validity Period’ page, feel free to adjust the validity period or leave the default.  This must be adjusted based on your needs.  Click Next.  On the ‘Configure Certificate Database’ page, you can adjust the paths or leave the defaults set.  Click Next.
Next we see the ‘Web Server (IIS)’ page.  You can read the description and check out the associations listed on the page if you’d like.  Click Next.


On the ‘Select Role Services’ page, leave the defaults selected.  Click Next.  On the ‘Confirm Installation Selections’ page, you can review your choices, go back and make changes, or clickInstall.  After the ‘Installation Progress’ page finishes, you can view your ‘Results’.

You’ve now got a domain controller that is capable of issuing certificates to your servers and users.  You can go back owing to the wizard and install additional CA components, for example, that will allow you to issue certificates to users and computers that are not part of your domain.  That choice is called ‘Certificate Enrollment Web Service’.

Install Active Directory Domain Services (ADDS) Role

Launch Server Manager
Click Add Roles and Features


Click Next

Select Role-based or feature-based installation and press Next

Since I am installing my forest locally I will select “Select a server from the server pool”
Select the server, in my case its DC2012
Press Next

Check off Active Directory Domain Services



When you check off Active Directory Domain Services a dialog window will pop up
Press Add Features

Press Next

Press Next on the features section, you do not need to check anything off here.
Some things will be checked off because you selected Active Directory Domain Services in the last section.

Read the important things to note about this installation.
Press Next

Press Install

Installation will complete. Press Close

Configure ADDS Forest and Domain

Next time your launch Server Manager. You will see a notification icon. Press the exclamation point. Select Promote this server to a domain controller


Warning: Do not create new Active Directory forests with the same name as an external DNS name. For example, if your Internet DNS URL is http://contoso.com, you must choose a different name for your internal forest to avoid future compatibility issues. That name should be unique and unlikely for web traffic. For example: corp.contoso.com.
Select Add a new forest
Specify the root domain name, in my case its pintolab.net
Press Next

In my new lab all servers will be Windows Server 2012. So I will be setting the functional level to Windows Server 2012. To understand more about Functional Levels please visit: http://technet.microsoft.com/en-us/library/cc771294.aspx
I will select Domain Name System (DNS), because ADDS needs DNS. This machine will function as the DNS server for the whole forest.
Enter a password for Directory Services Restore Mode (DSRM)
Press Next

Press Next. If there was an existing DNS server you would be able to change this option.

I like to set my domain name to 8 characters or less so that the NetBIOS name is the same as the domain name. If my domain name was longer, it would have truncated it. You can however make this anything you want. More information on NetBIOS Domain Names: http://technet.microsoft.com/en-us/library/cc961556.aspx
Press Next

Press Next

Press Next

Press Install
In my case I got a couple of warnings. The most important warning was the one saying I am using DHCP instead of an assigned IP Address. It’s important to make sure your Domain Controller and DNS Servers use static IP’s.

After Installation, Press Close

Setup will reboot the server, you will notice that the domain name is now in front of the username

One thing to take note of is that when DNS gets installed it will point the preferred DNS Server to itself and within DNS it will use the DNS Server that was in there before as a forwarder.

Managing Active Directory

Open Server Manager
Select AD DS
Right Click the Server Name, I find this is the quickest way to get to the Management Tools, since they removed the good ole start menu.

When you right click the server name you should see the familiar AD tools.

Active Directory Users and Computers thankfully has the same look and feel as previous versions.

 

Install the Sharing Service in Ubuntu Linux

The sharing service or Samba as it is called in Ubuntu is not installed by default. The installation process of Samba varies in complexity depending on the method you will be using. I will show you the most easy and straightforward method to install Samba.
First, in Ubuntu, open the Home Folder, located in the Places menu.

Next, right-click on any folder from this window to open a contextual menu. From the contextual menu, click on Sharing Options.

This opens the Folder Sharing window. Check the box next to ’Share this folder’.

A warning window will pop-up stating that the sharing service is not installed. Click on the Install service button.

Note: If you do not receive this warning, it means that the sharing service is already installed and you should be able to share files and folders. To change the Workgroup, follow the instructions found in the next section.
Then type your user account password and click on OK. The installation process will begin.

In a few seconds, you will be notified that all changes have been successfully applied. Click Close and Ubuntu will ask to restart your session.

Save any open files you might have and click Restart session. After the restart, the sharing service is installed and fully functioning.

Configure and change the Workgroup in Ubuntu

In most cases you won’t have to change the Workgroup name because, by default, Ubuntu, Windows and Mac OS X have the same Workgroup name, which is actually “workgroup”. However, if you have to change it follow the steps detailed in this section.
Open a Terminal window and type the following command: sudo gedit /etc/samba/smb.conf.
Then, press Enter. If you haven’t previously used the Terminal this session, Ubuntu will ask you to type in your user account password.

Next, the Samba configuration file will open in a gedit window. Scroll down, if necessary, until you find the workgroup line, in the Global Settings section.

Edit the Workgroup name so that it will match the name of the Workgroup you want to add your Ubuntu computer to.
Click on Save and restart Ubuntu so that the new settings get applied.