# Single Sign-On with the NTLM Authentication Protocol

You can use single sign-on (SSO) with the NT LAN Manager (NTLM) authentication protocol.

1. On the Command Center computer, add the SecurityProtocol additional setting:

   Property | Value
   --- | ---
   Name | SecurityProtocol
   Category | WebConsole
   Type | STRING
   Value | 2

   For instructions on adding the additional setting from the CommCell Console, see Adding or Modifying Additional Settings from the CommCell Console.

2. Restart the Tomcat services on the Command Center computer.

   For instructions on restarting the Tomcat service, see Restarting a Service.

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