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Citrix Gateway
Current Release 13.0 12.1
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Device Certificate in nFactor as an EPA component

November 24, 2022
Contributed by: 
S C

Device Certificate can be configured in nFactor as an EPA component. Device certificate can appear as any factor as a part of EPA.

Following are the benefits of configuring Device Certificate in nFactor as an EPA component.

  • The failure in device certificate validation does not result in a logon failure. Based on the configuration, the logon can proceed and the user can be placed under groups with limited access.

  • Because the Device Certificate check is policy driven, you can selectively allow or block access of your corporate intranet resources based on Device Certificate authentication. For example, Device Certificate authentication can be used to provide conditional access to the Office 365 application only on the corporate managed laptops.

Device certificate validation cannot be a part of a periodic EPA scan.

Important:

  • By default, Windows mandates admin privileges for accessing device certificates. To add the device certificate check for non-admin users, you must install the VPN plug-in of the same version as the EPA plug-on on the device.

  • You can add multiple CA certificates to the gateway and validate the device certificate.

Configure Device Certificate in nFactor as an EPA component

To configure Device Certificate in nFactor as an EPA component using the command line interface, at the command prompt, type:

add authentication epaAction epa-act -csecexpr sys.client_expr("device-cert_0_0") -defaultgroup epa_pass -quarantine_group epa_fail

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To configure Device Certificate in nFactor as an EPA component for the VPN virtual server using the Citrix ADC GUI:

  1. In the NetScaler GUI, navigate to Configuration> Citrix Gateway>Virtual Servers.
  2. On the Citrix Gateway Virtual Servers page, select the Virtual server to be modified and click Edit.

  3. On the VPN Virtual Server page, click the Edit icon.

    VPN virtual server page

  4. Click More.

  5. Click Add next to the CA for Device Certificate section and click OK.

    Click add

    Do not select the Enable Device Certificate check box. Enabling it enables the Device Certificate validation in the classic EPA.

  6. In the NetScaler GUI, navigate to Configuration> Security>AAA – Application Traffic>Policies>Authentication>Advanced Policies>Actions>EPA>.

  7. On the Authentication EPA Action page, click Add. You can click Edit to edit an existing EPA action.

  8. On the Create Authentication EPA Action page, provide the values for the required fields to create an authentication EPA action, and click the EPA Editor link.

  9. Select Common from the Expression Editor menu.

    Select common

  10. Select Device Certificate from the subsequent menu that appears and click Done to complete the configuration.

    Select device certificate

To configure Device Certificate in nFactor as an EPA component for the Citrix ADC AAA virtual server using the Citrix ADC GUI:

  1. In the Citrix DC GUI, navigate to Security> AAA-Application Traffic>Virtual Servers.

  2. On the Citrix Gateway Virtual Servers page, select the Virtual server to be modified and click Edit.

  3. On the Authentication Virtual Server page, click the Edit icon.

  4. Click More.

  5. Click Add next to the CA for Device Certificate section.

    Click Add

  6. Select the certificate to be added and click OK to complete the configuration.

    Select the device certificate

  7. Repeat step 6 to step 10 listed in the previous section to complete the configuration.
Device Certificate in nFactor as an EPA component
November 24, 2022
Contributed by: 
S C
November 24, 2022
Contributed by: 
S C

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