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Very similar to process above but ended up being less invasive in our environment. Also, in ZPanel 10.1.1, it appears that ctrl_auth::RequireUser() requires an additional parameter. Code for phpCAS needs minor modification but I've not tested the change.

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1. Install and configure both ZPanel and mod_auth_cas for Apache
   1. README for mod_auth_cas is very useful
   2. At a high level, you need to:
      1. Build mod_auth_cas on your ZPanel server
      2. Configure your ZPanel server's Apache instance to use mod_auth_cas
2.  Make sure mod_auth_cas is configured to protect the ZPanel directory (%zpanel-root%/panel - typically /etc/zpanel/panel)
   1. Use .htaccess or the main Apache configuration

   
   
   

   Code Block
   language text title CAS Authentication Sample
   AuthType CAS require user someuser

3.  Edit ZPanel's auth.class.php as follows: (%zpanel-root%/panel/dryden/ctrl/auth.class.php - typically /etc/zpanel/panel/dryden/ctrl/auth.class.php)
   1. Make ZPanel use REMOTE_USER (set by CAS) for authentication
      

      1. Add self::Authenticate line to beginning of RequireUser() as follows

         Code Block
         language php title auth.class.php -> static function RequireUser()
         static function RequireUser()     {         //Modifications for CAS login         self::Authenticate($_SERVER['REMOTE_USER'], $_COOKIE['zPass'], false, true, false);         //End modifications for CAS login           global $zdbh;         if (!isset($_SESSION['zpuid'])) {             if (isset($_COOKIE['zUser'])) {                 if (isset($_COOKIE['zSec'])) {

      2. Remove password line from SQL and change array near beginning of Authenticate() as follows:
         

         Code Block
         language php title auth.class.php -> static function Authenticate
         static function Authenticate($username, $password, $rememberme = false, $iscookie = false, $sessionSecuirty)     {         global $zdbh;         $sqlString = "SELECT * FROM                       x_accounts WHERE                       ac_user_vc = :username AND                       ac_enabled_in = 1 AND                       ac_deleted_ts IS NULL";           $bindArray = array(':username' => $username);

       

   2. That should be all

      1. Navigate to your ZPanel URL and you should receive a CAS login screen

      2. Login via CAS and you will see your ZPanel account