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For sakai cassification you can refer to the documentation : httphttps://confluencesakaiproject.sakaiprojectatlassian.orgnet/wiki/displayspaces/SAKDEV/pages/16309354637/CASifying+Sakai

Modify the sakai.properties file as follows to add CAS authentication and authentication for so-called guest members

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# ########################################################################
  # LOGIN/LOGOUT
  # ########################################################################
 
  # Include the user id and password for login on the gateway site
    top.login=false
  # Let the container handle login or not.
  # Set to true for single-sign on type setups, false for just internal login.
    container.login = true
 
  #
  # Login icon (uses container auth)
  # set to cas_login when CAS is in use
  #
    login.icon=/library/image/cas_login.gif
 
  #
  # Controls 2nd button (bypasses container auth)
  #
    xlogin.enabled=true
    xlogin.text=Invite
    xlogin.icon=/library/image/xlogin_login.gif
 
  # Logout icon
  #
   logout.icon=/library/image/cas_logout.gif
 
  # the URL to send folks to after they logout
    loggedOutUrl==https://serveur_cas/logout?service=http://server_sakai
 
    login.use.xlogin.to.relogin=false

Add  LDAP to Sakai

Edit the components.xml file

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