diff --git a/ajax/ajax_checkConnection.php b/ajax/ajax_checkConnection.php
index 9379f369..3e9991b0 100644
--- a/ajax/ajax_checkConnection.php
+++ b/ajax/ajax_checkConnection.php
@@ -23,7 +23,7 @@
  *
  */
 
-use SP\Auth\Ldap;
+use SP\Auth\Ldap\Ldap;
 use SP\Core\Init;
 use SP\Core\SessionUtil;
 use SP\Http\Request;
diff --git a/ajax/ajax_doLogin.php b/ajax/ajax_doLogin.php
index 30d8b170..f147d908 100644
--- a/ajax/ajax_doLogin.php
+++ b/ajax/ajax_doLogin.php
@@ -24,7 +24,7 @@
  */
 
 use SP\Auth\Auth;
-use SP\Auth\Ldap;
+use SP\Auth\Ldap\Ldap;
 use SP\Core\CryptMasterPass;
 use SP\Core\Init;
 use SP\Core\Language;
@@ -36,7 +36,6 @@ use SP\DataModel\UserData;
 use SP\DataModel\UserPassRecoverData;
 use SP\Http\JsonResponse;
 use SP\Http\Request;
-use SP\Http\Response;
 use SP\Log\Log;
 use SP\Mgmt\Groups\Group;
 use SP\Mgmt\Profiles\Profile;
diff --git a/inc/SP/Auth/Auth.class.php b/inc/SP/Auth/Auth.class.php
index 254e2782..d1b6b57c 100644
--- a/inc/SP/Auth/Auth.class.php
+++ b/inc/SP/Auth/Auth.class.php
@@ -26,6 +26,8 @@
 
 namespace SP\Auth;
 
+use SP\Auth\Ldap\Ldap;
+use SP\Auth\Ldap\LdapADS;
 use SP\Config\Config;
 use SP\Core\Exceptions\SPException;
 use SP\DataModel\UserData;
diff --git a/inc/SP/Auth/Ldap.class.php b/inc/SP/Auth/Ldap/Ldap.class.php
similarity index 99%
rename from inc/SP/Auth/Ldap.class.php
rename to inc/SP/Auth/Ldap/Ldap.class.php
index 75aaa079..56fb28f4 100644
--- a/inc/SP/Auth/Ldap.class.php
+++ b/inc/SP/Auth/Ldap/Ldap.class.php
@@ -24,7 +24,7 @@
  *
  */
 
-namespace SP\Auth;
+namespace SP\Auth\Ldap;
 
 use SP\Config\Config;
 use SP\Log\Log;
diff --git a/inc/SP/Auth/LdapADS.class.php b/inc/SP/Auth/Ldap/LdapADS.class.php
similarity index 98%
rename from inc/SP/Auth/LdapADS.class.php
rename to inc/SP/Auth/Ldap/LdapADS.class.php
index 9f90103c..944589f0 100644
--- a/inc/SP/Auth/LdapADS.class.php
+++ b/inc/SP/Auth/Ldap/LdapADS.class.php
@@ -23,8 +23,9 @@
  *
  */
 
-namespace SP\Auth;
+namespace SP\Auth\Ldap;
 
+use SP\Auth\Ldap\Ldap;
 use SP\Config\Config;
 use SP\Log\Log;
 
diff --git a/inc/SP/Auth/Ldap/LdapBase.class.php b/inc/SP/Auth/Ldap/LdapBase.class.php
new file mode 100644
index 00000000..e9b96601
--- /dev/null
+++ b/inc/SP/Auth/Ldap/LdapBase.class.php
@@ -0,0 +1,248 @@
+<?php
+
+namespace Auth\Ldap;
+
+use SP\Config\Config;
+use SP\Log\Log;
+
+abstract class LdapBase implements LdapInterface
+{
+    /**
+     * @var resource
+     */
+    protected $ldapHandler;
+    /**
+     * @var string
+     */
+    protected $server;
+    /**
+     * @var string
+     */
+    protected $searchBase;
+    /**
+     * @var string
+     */
+    protected $bindDn;
+    /**
+     * @var string
+     */
+    protected $bindPass;
+    /**
+     * @var string
+     */
+    protected $group;
+    /**
+     * @var array
+     */
+    protected $searchData;
+
+    /**
+     * Comprobar si los parámetros necesario de LDAP están establecidos.
+     *
+     * @return bool
+     */
+    public function checkParams()
+    {
+//        self::$isADS = Config::getConfig()->isLdapAds();
+        $this->searchBase = Config::getConfig()->getLdapBase();
+//        $this->server = (!self::$isADS) ? Config::getConfig()->getLdapServer() : LdapADS::getADServer(Config::getConfig()->getLdapServer());
+        $this->server = $this->pickServer();
+        $this->bindDn = Config::getConfig()->getLdapBindUser();
+        $this->bindPass = Config::getConfig()->getLdapBindPass();
+        $this->group = Config::getConfig()->getLdapGroup();
+
+        if (!$this->searchBase || !$this->server || !$this->bindDn || !$this->bindPass) {
+            Log::writeNewLog(__FUNCTION__, _('Los parámetros de LDAP no están configurados'));
+
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * Obtener el RDN del grupo.
+     *
+     * @throws \Exception
+     * @return string con el RDN del grupo
+     */
+    protected function searchGroupDN()
+    {
+        $Log = new Log(__FUNCTION__);
+        $filter = $this->searchGroupDN() ?: $this->group;
+        $filter = '(cn=' . $filter . ')';
+        $filterAttr = ["dn", "cn"];
+
+        $searchRes = @ldap_search($this->ldapHandler, $this->searchBase, $filter, $filterAttr);
+
+        if (!$searchRes) {
+            $Log->setLogLevel(Log::ERROR);
+            $Log->addDescription(_('Error al buscar RDN de grupo'));
+            $Log->addDetails(_('Grupo'), $filter);
+            $Log->addDetails('LDAP ERROR', sprintf('%s (%d)', ldap_error($this->ldapHandler), ldap_errno($this->ldapHandler)));
+            $Log->addDetails('LDAP FILTER', $filter);
+            $Log->writeLog();
+
+            throw new \Exception(_('Error al buscar RDN de grupo'));
+        }
+
+        if (@ldap_count_entries($this->ldapHandler, $searchRes) === 1) {
+            $ldapSearchData = @ldap_get_entries($this->ldapHandler, $searchRes);
+
+            if (!$ldapSearchData) {
+                $Log->setLogLevel(Log::ERROR);
+                $Log->addDescription(_('Error al buscar RDN de grupo'));
+                $Log->addDetails(_('Grupo'), $filter);
+                $Log->addDetails('LDAP ERROR', sprintf('%s (%d)', ldap_error($this->ldapHandler), ldap_errno($this->ldapHandler)));
+                $Log->writeLog();
+
+                throw new \Exception(_('Error al buscar RDN de grupo'));
+            }
+
+            return $ldapSearchData[0]["dn"];
+        } else {
+            $Log->setLogLevel(Log::ERROR);
+            $Log->addDescription(_('Error al buscar RDN de grupo'));
+            $Log->addDetails(_('Grupo'), $filter);
+            $Log->addDetails('LDAP FILTER', $filter);
+            $Log->writeLog();
+
+            throw new \Exception(_('Error al buscar RDN de grupo'));
+        }
+    }
+
+    /**
+     * Obtener el nombre del grupo a partir del CN
+     *
+     * @return bool
+     */
+    protected function getGroupName()
+    {
+        if (isset($this->group) && preg_match('/^cn=([\w\s-]+),.*/i', $this->group, $groupName)) {
+            return $groupName[1];
+        }
+
+        return false;
+    }
+
+    /**
+     * Escapar carácteres especiales en el RDN de LDAP.
+     *
+     * @param string $dn con el RDN del usuario
+     * @return string
+     */
+    protected function escapeLdapDN($dn)
+    {
+        $chars = array('/(,)(?!uid|cn|ou|dc)/i', '/(?<!uid|cn|ou|dc)(=)/i', '/(")/', '/(;)/', '/(>)/', '/(<)/', '/(\+)/', '/(#)/', '/\G(\s)/', '/(\s)(?=\s*$)/', '/(\/)/');
+        return preg_replace($chars, '\\\$1', $dn);
+    }
+
+    /**
+     * Realizar la desconexión del servidor de LDAP.
+     */
+    public function unbind()
+    {
+        @ldap_unbind($this->ldapHandler);
+    }
+
+    /**
+     * Obtener el filtro para buscar el usuario
+     *
+     * @param string $userLogin Login del usuario
+     * @return mixed
+     */
+    protected abstract function getUserDnFilter($userLogin);
+
+    /**
+     * Obtener el RDN del usuario que realiza el login.
+     *
+     * @param string $userLogin Login del usuario
+     * @return array
+     * @throws \Exception
+     */
+    public function getUserDN($userLogin)
+    {
+        $Log = new Log(__FUNCTION__);
+
+//        if (self::$isADS === true) {
+//            $filter = '(&(|(samaccountname=' . $userLogin . ')(cn=' . $userLogin . ')(uid=' . $userLogin . '))(|(objectClass=inetOrgPerson)(objectClass=person)(objectClass=simpleSecurityObject))(objectCategory=person))';
+//        } else {
+//            $filter = '(&(|(samaccountname=' . $userLogin . ')(cn=' . $userLogin . ')(uid=' . $userLogin . '))(|(objectClass=inetOrgPerson)(objectClass=person)(objectClass=simpleSecurityObject)))';
+//        }
+
+        $filterAttr = array("dn", "displayname", "samaccountname", "mail", "memberof", "lockouttime", "fullname", "groupmembership", "mail");
+
+        $searchRes = @ldap_search($this->ldapHandler, $this->searchBase, $this->getUserDnFilter($userLogin), $filterAttr);
+
+        if (!$searchRes) {
+            $Log->setLogLevel(Log::ERROR);
+            $Log->addDescription(_('Error al buscar el DN del usuario'));
+            $Log->addDetails(_('Usuario'), $userLogin);
+            $Log->addDetails('LDAP ERROR', sprintf('%s (%d)', ldap_error($this->ldapHandler), ldap_errno($this->ldapHandler)));
+            $Log->addDetails('LDAP FILTER', $this->getUserDnFilter());
+            $Log->writeLog();
+
+            throw new \Exception(_('Error al buscar el DN del usuario'));
+        }
+
+        if (@ldap_count_entries($this->ldapHandler, $searchRes) === 1) {
+            $ldapSearchData = @ldap_get_entries($this->ldapHandler, $searchRes);
+
+            if (!$ldapSearchData) {
+                $Log->setLogLevel(Log::ERROR);
+                $Log->addDescription(_('Error al localizar el usuario en LDAP'));
+                $Log->addDetails(_('Usuario'), $userLogin);
+                $Log->addDetails('LDAP ERROR', sprintf('%s (%d)', ldap_error($this->ldapHandler), ldap_errno($this->ldapHandler)));
+                $Log->writeLog();
+
+                throw new \Exception(_('Error al localizar el usuario en LDAP'));
+            }
+        } else {
+            $Log->setLogLevel(Log::ERROR);
+            $Log->addDescription(_('Error al buscar el DN del usuario'));
+            $Log->addDetails(_('Usuario'), $userLogin);
+            $Log->addDetails('LDAP FILTER', $this->getUserDnFilter());
+            $Log->writeLog();
+
+            throw new \Exception(_('Error al buscar el DN del usuario'));
+        }
+
+        return $ldapSearchData;
+    }
+
+    /**
+     * Obtener el servidor de LDAP a utilizar
+     *
+     * @return mixed
+     */
+    protected abstract function pickServer();
+
+    /**
+     * Realizar una búsqueda de objetos en la ruta indicada.
+     *
+     * @throws \Exception
+     * @return int El número de resultados
+     */
+    protected function searchBase()
+    {
+        $Log = new Log(__FUNCTION__);
+
+        $groupDN = (!empty($this->group)) ? $this->searchGroupDN() : '*';
+        $filter = '(&(|(memberOf=' . $groupDN . ')(groupMembership=' . $groupDN . '))(|(objectClass=inetOrgPerson)(objectClass=person)(objectClass=simpleSecurityObject)))';
+        $filterAttr = ["dn"];
+
+        $searchRes = @ldap_search($this->ldapHandler, $this->searchBase, $filter, $filterAttr);
+
+        if (!$searchRes) {
+            $Log->setLogLevel(Log::ERROR);
+            $Log->addDescription(_('Error al buscar objetos en DN base'));
+            $Log->addDetails('LDAP ERROR', sprintf('%s (%d)', ldap_error($this->ldapHandler), ldap_errno($this->ldapHandler)));
+            $Log->addDetails('LDAP FILTER', $filter);
+            $Log->writeLog();
+
+            throw new \Exception(_('Error al buscar objetos en DN base'));
+        }
+
+        return @ldap_count_entries($this->ldapHandler, $searchRes);
+    }
+}
\ No newline at end of file
diff --git a/inc/SP/Auth/Ldap/LdapInterface.class.php b/inc/SP/Auth/Ldap/LdapInterface.class.php
new file mode 100644
index 00000000..3e372dca
--- /dev/null
+++ b/inc/SP/Auth/Ldap/LdapInterface.class.php
@@ -0,0 +1,58 @@
+<?php
+
+namespace Auth\Ldap;
+
+interface LdapInterface
+{
+    /**
+     * Realizar la autentificación con el servidor de LDAP.
+     *
+     * @return void
+     */
+    public function bind();
+
+    /**
+     * Comprobar la conexión al servidor de LDAP.
+     *
+     * @return bool
+     */
+    public function checkConnection();
+
+    /**
+     * Realizar la conexión al servidor de LDAP.
+     *
+     * @return void
+     */
+    public function connect();
+
+    /**
+     * Comprobar si los parámetros necesarios de LDAP están establecidos.
+     *
+     * @return bool
+     */
+    public function checkParams();
+
+    /**
+     * Obtener el RDN del usuario que realiza el login.
+     *
+     * @param string $userLogin Login del usuario
+     * @return string
+     */
+    public function getUserDN($userLogin);
+
+    public function unbind();
+
+    /**
+     * Obtener los atributos del usuario.
+     *
+     * @return array
+     */
+    public function getAttributes();
+
+    /**
+     * Buscar al usuario en un grupo.
+     *
+     * @return bool
+     */
+    public function searchUsrInGroup();
+}
\ No newline at end of file