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@ -146,7 +146,7 @@ After the catalog file is signed, add the signing certificate to a WDAC policy,
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1. If you have not already verified the catalog file digital signature, right-click the catalog file, and then click **Properties**. On the **Digital Signatures** tab, verify that your signing certificate exists with the algorithm you expect.
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2. If you already have an XML policy file that you want to add the signing certificate to, skip to the next step. Otherwise, use [New-CIPolicy](https://technet.microsoft.com/library/mt634473.aspx) to create a WDAC policy that you will later merge into another policy (not deploy as-is). This example creates a policy called **CatalogSignatureOnly.xml** in the location **C:\\PolicyFolder**:
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2. If you already have an XML policy file that you want to add the signing certificate to, skip to the next step. Otherwise, use [New-CIPolicy](https://docs.microsoft.com/powershell/module/configci/new-cipolicy?view=win10-ps) to create a WDAC policy that you will later merge into another policy (not deploy as-is). This example creates a policy called **CatalogSignatureOnly.xml** in the location **C:\\PolicyFolder**:
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` New-CIPolicy -Level PcaCertificate -FilePath C:\PolicyFolder\CatalogSignatureOnly.xml –UserPEs`
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@ -105,13 +105,13 @@ Table 3. Windows Defender Application Control policy - file rule levels
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| **WHQLPublisher** | This is a combination of the WHQL and the CN on the leaf certificate and is primarily for kernel binaries. |
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| **WHQLFilePublisher** | Specifies that the binaries are validated and signed by WHQL, with a specific publisher (WHQLPublisher), and that the binary is the specified version or newer. This is primarily for kernel binaries. |
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> **Note** When you create WDAC policies with the [New-CIPolicy](https://technet.microsoft.com/library/mt634473.aspx) cmdlet, you can specify a primary file rule level by including the **-Level** parameter. For discovered binaries that cannot be trusted based on the primary file rule criteria, use the **-Fallback** parameter. For example, if the primary file rule level is PCACertificate but you would like to trust the unsigned applications as well, using the Hash rule level as a fallback adds the hash values of binaries that did not have a signing certificate.
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> **Note** When you create WDAC policies with the [New-CIPolicy](https://docs.microsoft.com/powershell/module/configci/new-cipolicy?view=win10-ps) cmdlet, you can specify a primary file rule level by including the **-Level** parameter. For discovered binaries that cannot be trusted based on the primary file rule criteria, use the **-Fallback** parameter. For example, if the primary file rule level is PCACertificate but you would like to trust the unsigned applications as well, using the Hash rule level as a fallback adds the hash values of binaries that did not have a signing certificate.
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## Example of file rule levels in use
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For example, consider some IT professionals in a department that runs many servers. They decide they want their servers to run only software signed by the providers of their software and drivers, that is, the companies that provide their hardware, operating system, antivirus, and other important software. They know that their servers also run an internally written application that is unsigned but is rarely updated. They want to allow this application to run.
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To create the WDAC policy, they build a reference server on their standard hardware, and install all of the software that their servers are known to run. Then they run [New-CIPolicy](https://technet.microsoft.com/library/mt634473.aspx) with **-Level Publisher** (to allow software from their software providers, the "Publishers") and **-Fallback Hash** (to allow the internal, unsigned application). They enable the policy in auditing mode and gather information about any necessary software that was not included on the reference server. They merge WDAC policies into the original policy to allow that additional software to run. Then they enable the WDAC policy in enforced mode for their servers.
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To create the WDAC policy, they build a reference server on their standard hardware, and install all of the software that their servers are known to run. Then they run [New-CIPolicy](https://docs.microsoft.com/powershell/module/configci/new-cipolicy?view=win10-ps) with **-Level Publisher** (to allow software from their software providers, the "Publishers") and **-Fallback Hash** (to allow the internal, unsigned application). They enable the policy in auditing mode and gather information about any necessary software that was not included on the reference server. They merge WDAC policies into the original policy to allow that additional software to run. Then they enable the WDAC policy in enforced mode for their servers.
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As part of normal operations, they will eventually install software updates, or perhaps add software from the same software providers. Because the "Publisher" remains the same on those updates and software, they will not need to update their WDAC policy. If they come to a time when the internally-written, unsigned application must be updated, they must also update the WDAC policy so that the hash in the policy matches the hash of the updated internal application.
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@ -797,7 +797,7 @@ To create a WDAC policy, copy each of the following commands into an elevated Wi
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` $CIPolicyBin=$CIPolicyPath+"DeviceGuardPolicy.bin"`
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2. Use [New-CIPolicy](https://technet.microsoft.com/library/mt634473.aspx) to create a new WDAC policy by scanning the system for installed applications:
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2. Use [New-CIPolicy](https://docs.microsoft.com/powershell/module/configci/new-cipolicy?view=win10-ps) to create a new WDAC policy by scanning the system for installed applications:
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` New-CIPolicy -Level PcaCertificate -FilePath $InitialCIPolicy –UserPEs 3> CIPolicyLog.txt `
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@ -887,7 +887,7 @@ Use the following procedure after you have been running a computer with a WDAC p
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` $CIAuditPolicy=$CIPolicyPath+"DeviceGuardAuditPolicy.xml"`
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3. Use [New-CIPolicy](https://technet.microsoft.com/library/mt634473.aspx) to generate a new WDAC policy from logged audit events. This example uses a file rule level of **Hash** and includes `3> CIPolicylog.txt`, which redirects warning messages to a text file, **CIPolicylog.txt**.
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3. Use [New-CIPolicy](https://docs.microsoft.com/powershell/module/configci/new-cipolicy?view=win10-ps) to generate a new WDAC policy from logged audit events. This example uses a file rule level of **Hash** and includes `3> CIPolicylog.txt`, which redirects warning messages to a text file, **CIPolicylog.txt**.
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` New-CIPolicy -Audit -Level Hash -FilePath $CIAuditPolicy –UserPEs 3> CIPolicylog.txt`
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