Provides configuration for the SessionSecurityTokenHandler class or derived classes.
<configuration>
  <system.identityModel>
    <identityConfiguration>
      <securityTokenHandlers>
        <add>
          <sessionTokenRequirement>
Syntax
<system.identityModel>  
  <identityConfiguration>  
    <securityTokenHandlers>  
      <add type="System.IdentityModel.Tokens.SessionSecurityTokenHandler, System.IdentityModel">  
        <sessionTokenRequirement lifetime=TimeSpan >  
        </sessionTokenRequirement>  
      </add>  
    </securityTokenHandlers>  
  </identityConfiguration>  
</system.identityModel>  
Attributes and Elements
The following sections describe attributes, child elements, and parent elements.
Attributes
| Attribute | Description | 
|---|---|
| lifetime | Specifies the lifetime of session tokens. | 
Child Elements
None
Parent Elements
| Element | Description | 
|---|---|
| <add> | Adds the specified security token handler to the token handler collection. | 
Example
<add type="System.IdentityModel.Tokens.SessionSecurityTokenHandler, System.IdentityModel">
    <sessionTokenRequirement lifetime="10:00" />  
</add>