Insert the ISA Server 2004 Enterprise CD and follow the installation instructions. You must choose to Install Configuration Storage Server. This will install an ADAM-Instance on this computer which will be used to store the configuration of ISA Server Arrays. ISA Server Array Members will connect to the Configuration Storage Server to receive the configuration.
Figure 1: Installation of a Configuration Storage Server
If you choose Install Configuration Storage Server you can see in Figure 2 that only the ISA Management Option and the Configuration Storage Server will be installed.
On the next page we must select create a new ISA Server enterprise (Figure 3). This configuration option creates a new ISA Server Enterprise during the installation.
Figure 2: Component Selection
Figure 4 shows a warning message that Microsoft recommends only deploying a single Enterprise in your Organization. Multiple Enterprises could be hard to manage. You can deploy multiple Arrays within one ISA Server Enterprise.
Figure 3: Create a new ISA Server Enterprise
The next step (Figure 5) is to name the new ISA Server Enterprise and enter a description for the new Enterprise.
Figure 4: Warning message when you install a new ISA Enterprise
If you are using ISA Server 2004 Enterprise in a single domain or in domains with trust relationships, you must choose the Setup Option I am deploying in a single domain or in domains with trust relationships. ISA Server will use Windows authentication for authentication purposes. If you are using ISA Servers and Configuration Storage Servers in different domains without trust relationship or in a workgroup deployment, you must use certificates to establish a secure communication channel for authentication purposes.
Figure 5: Enter a name and description for the new Enterprise
Attention:Keep in mind that when you deploy ISA Server 2004 Enterprise in a workgroup environment you can use only one Configuration Storage Server. The following links could also find your interest when you deploy ISA Server in a workgroup:
If you are using certificates in a workgroup deployment you must use this tool to update ADAM account settings so that they do not expire.
http://www.microsoft.com/downloads/details.aspx?FamilyID=1cbac3e5-acac-4613-9860-e1b760b9434f&DisplayLang=en
The second tool is ISACertTool.exe that helps you to do the following:
• Install a server certificate on the Configuration Storage server.
• Install a root certificate on each array member to indicate that it trusts the Certification Authority that issued the server certificate
http://www.microsoft.com/downloads/details.aspx?FamilyId=F8F60164-C5A5-4716-9FF4-2D56C86506C3&displaylang=en
After finishing ISA Server 2004 setup, the setup opens as a last step, a website from the ISA Server 2004 installation directory, which will guide you through additional steps how to secure your Windows / ISA Server installation.
Figure 6: Setup the ISA Server 2004 Deployment method
I also recommend reading the following articles from the Microsoft website:
Hardening the Windows Infrastructure on the ISA Server 2004 Computer
http://www.microsoft.com/technet/prodtechnol/isa/2004/plan/hardeningwindows.mspx
ISA Server 2004 Security Hardening Guide
http://www.microsoft.com/technet/prodtechnol/isa/2004/plan/securityhardeningguide.mspx
Before we are going to install the ISA Server 2004 Array members, we must create a new ISA Server 2004 Array. To create a new ISA Server Array start the ISA Server 2004 management console on the Configuration Storage Server, navigate to Arrays and create a new ISA Server Array.
Figure 7: Hardening the Windows Server / ISA Server infrastructure
We will name the Array MainArray (Figure 9).
Figure 8: Create a new ISA Server Array
The next page (Figure 10) asks you to enter the ISA Server Arrays DNS name. You must enter a DNS conform FQDN (Fully Qualified Domain Name). You must create a corresponding A-record in DNS, so that Firewallclients and Webproxyclients can resolve the Name correctly. If you are using NLB you must enter the VIP (VirtualIP) as the IP address in DNS. I will give you more information about implementing NLB in another article. We will enter the Array's DNS name MainArray.cohovineyard.com.
Figure 9: Name the ISA Server 2004 Array
The next step is to specify which Enterprise Policy to apply to this Array. Because we don't create another Policy, we must use the Default Policy (Figure 11). It is possible to create new Policies every time and associate this new Policy with an Array after installation. I will show you how to do this in another article on www.isaserver.org.
Figure 10: ISA Server Array's DNS name
In the following picture you can select the types of Array Firewall Policy rules that can be created for this Array (Figure 12). This is a great option to limit the creation of rule type at Array level.
Figure 11: Select the ISA Server Enterprise Policy for the new Array
After reading the summary of the new Array Wizard click Finish. ISA Server now creates the new Array. This task can be time consuming (Figure 13).
Figure 12: Select the types of Array Firewall Policy rules that can be created for this Array
Click Apply (Figure 14) and you have successfully finished the new Array installation.
Figure 13: Creating the new Array
As you know, ISA Server 2004 uses System Policies which allow some communications between ISA Server, Active Directory Servers, DNS Servers, DHCP and many more. You must modify the System Policy to allow the ISA Server 2004 Array Members to access the Configuration Storage Server. If you want to know more about System Policies, read Tom Shinders article "The ISA Firewall's Default Post Installation System Policy and Configuration" at the following website: http://www.isaserver.org/articles/2004systempolicy.html.
Figure 14: Click Apply to save the changes and update the configuration
You can find these settings in the System Policy Editor under Configuration Storage Server – Local Configuration Storage Server Access. Click Enable (Figure 15).
Click From (Figure 15) in the System Policy Editor – select Managed ISA Server Computers and click Add to enter the names and IP-addresses from the two ISA Server 2004 Enterprise Array members.
Figure 15: Enable Remote Configuration Storage Server Access
Figure 16: Enter the name and IP-addresses for the Managed ISA Server Computers
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