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Section

This operation is optional allowing SBA administrators to configure the security settings for roles, role services, and features on the SBA. This applies security rules to the Windows Server 2008 R2 operating system on the ASM hosting the SBA, and improves system hardening (i.e., reducing its surface of vulnurabilityvulnerability).

You can do so by either Applying a Predefined Security Template, or Importing a Custom Security Template of choice. The following is a list of the main groups of security rules that are modified:

  • Microsoft OS Services
  • Microsoft OS Networking Firewall
  • Microsoft OS Registry Values
  • Microsoft OS Audit
  • Microsoft OS SCE Templates

 

Applying

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an SBA Security Template

Warning

Once the security template is applied, the action cannot be reversed. In order to disable the security template, the ASM has to be re-initialized.

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  • Enables data execution protection
  • Enables firewall
  • Disables domain users from logging into the ASM
  • Enables only local administrator login

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Apply

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Security Template

  1. In the WebUI, access Tasks> Lync Survivable Branch Appliance (or Skype for Business Survivable Branch) > Setup SBA.
  2. Rules Template. PanelborderStylenone

    Click Security.

    Caption
    0Figure
    1Apply

    Predefined Security Template

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  3. Click OK. The operation will take up to to 5 minutes to complete.

Importing a Custom Security Template

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  1. Security Template

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  2. From the Apply Version drop down list, select the applicable TLS option (TLS 1.2 Only or TLS 1.0-1.2).

    Info

    Depending on the SBA deployment, configure the appropriate TLS version. See below for guidelines.

    • TLS 1.2 Only is supported for Lync 2013 with security update and Skype for Business.
    • TLS 1.2 Only is not supported in Lync 2010.
    Note

    For TLS 1.2 Only to work with a Skype for Business setup, ensure ASM-ROLL-UP-UPDATES_2016-10.zip or later is applied to the SBA. For installing ASM Rollups, refer to ASM Roll-up Update.

  3. Click Apply TLS Version.

  4. For Microsoft SBA Security Hardening, click Apply Default Template. If SBA Security Hardening has been run on the SBA at deployment, this field will be greyed out.

  5. For Custom Security Template, click Browse and select the applicable Security XML file. You need a Windows Server security template XML file created using the Microsoft Security Configuration Wizard (SCW)

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  1. . Refer to the following for how to create the file:

    Caption
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    1Windows Security Templates
    Windows VersionMicrosoft Security Configuration Wizard Reference
    Windows 2008Microsoft Security Configuration Wizard (SCW)
    Windows 2008R2
    Windows 2012R2

    Microsoft Security Configuration Wizard (SCW)

     

  2. Click Submit Security Template file. The operation will take up to to five minutes to complete.

Verify TLS Version is Applied

  1. In the WebUI, access Settings > Application Solution Module > Operational Status (or via Tasks > Application Solution Module > Operational Status).

  2. Under Windows Status > TLS Version, view the current, enabled TLS version.

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    0Figure
    1View Enabled TLS Version

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