diff --git a/config/example-config.php b/config/example-config.php
index 386f29a3..c31f83fe 100644
--- a/config/example-config.php
+++ b/config/example-config.php
@@ -691,6 +691,12 @@ $c->admin_email = 'calendar-admin@example.com';
 //     'bindDN' => 'cn=calendar-manager,ou=users,dc=example,dc=net',
 //     'passDN' => 'xxxxxxxx',
 
+//     /* Perform a SASL bind (usually EXTERNAL/GSSAPI) instead of a
+//      * simple bind. Enalbe this if you would like to authenticate to
+//      * the LDAP server using Kerberos credentials.
+//      */
+//     'sasl' => 'yes', // perform a sasl bind
+
 //     'protocolVersion' => '3', // version of LDAP protocol to use
 //     'optReferrals'    => 0,   // whether to automatically follow referrals
 //                               // returned by the LDAP server
@@ -773,6 +779,7 @@ $c->admin_email = 'calendar-admin@example.com';
 // $c->authenticate_hook['config'] = array(
 //     'host'              => 'ldap://ldap.example.net',
 //     'port'              => '389', // usually 636 for ldaps
+//     'sasl'              => 'yes',
 //     'bindDN'            => 'cn=bind-user,cn=Users,dc=example,dc=net',
 //     'passDN'            => 'secret',
 //     'baseDNUsers'       => 'dc=example,dc=net',
diff --git a/inc/drivers_ldap.php b/inc/drivers_ldap.php
index 754dac31..447e9fd9 100644
--- a/inc/drivers_ldap.php
+++ b/inc/drivers_ldap.php
@@ -118,7 +118,8 @@ class ldapDriver
       //ldap_set_option(NULL, LDAP_OPT_DEBUG_LEVEL, 7);
 
       //connect as root
-      if (!ldap_bind($this->connect, (isset($config['bindDN']) ? $config['bindDN'] : null), (isset($config['passDN']) ? $config['passDN'] : null) ) ){
+      $bind_func = isset($config['sasl']) ? 'ldap_sasl_bind' : 'ldap_bind';
+      if (!$bind_func($this->connect, (isset($config['bindDN']) ? $config['bindDN'] : null), (isset($config['passDN']) ? $config['passDN'] : null) ) ){
           $bindDN = isset($config['bindDN']) ? $config['bindDN'] : 'anonymous';
           $passDN = isset($config['passDN']) ? $config['passDN'] : 'anonymous';