diff --git a/upload/source/admincp/admincp_menu.php b/upload/source/admincp/admincp_menu.php
index d030a3e2a413809652df6ca4359b97785ec3d0dc..df82f7767a05d91c87c7af24ac07b85f8259897b 100644
--- a/upload/source/admincp/admincp_menu.php
+++ b/upload/source/admincp/admincp_menu.php
@@ -169,6 +169,7 @@ $menu['safe'] = array(
 	array('menu_safe_setting', 'setting_sec'),
 	array('menu_safe_seccheck', 'setting_seccheck'),
 	array('menu_security', 'optimizer_security'),
+	array('menu_serversec', 'optimizer_serversec'),
 	array('menu_safe_accountguard', 'setting_accountguard'),
 );
 
diff --git a/upload/source/admincp/admincp_optimizer.php b/upload/source/admincp/admincp_optimizer.php
index 70443fa7b8223300bd122a20ce3c5b0920fcb92f..b275323a928d5cbdcf8fe68f78e885183573053c 100644
--- a/upload/source/admincp/admincp_optimizer.php
+++ b/upload/source/admincp/admincp_optimizer.php
@@ -45,13 +45,18 @@ $security_option = array(
 	'optimizer_loginoutofdate',
 );
 
+$serversec_option = array(
+	'optimizer_dos8p3',
+	'optimizer_httphost'
+);
+
 if($_G['setting']['connect']['allow']) {
 	$security_option[] = 'optimizer_postqqonly';
 	$security_option[] = 'optimizer_aggid';
 }
 
 $check_record_time_key = 'check_record_time';
-if(in_array($operation, array('security', 'performance'))) {
+if(in_array($operation, array('security', 'serversec', 'performance'))) {
 	$_GET['anchor'] = $operation;
 	$operation = '';
 }
@@ -60,6 +65,11 @@ if($_GET['anchor'] == 'security') {
 	$optimizer_option = $security_option;
 	$check_record_time_key = 'security_check_record_time';
 	showsubmenu('menu_security');
+} elseif($_GET['anchor'] == 'serversec') {
+	shownav('safe', 'menu_serversec');
+	$optimizer_option = $serversec_option;
+	$check_record_time_key = 'serversec_check_record_time';
+	showsubmenu('menu_serversec');
 } elseif($_GET['anchor'] == 'performance') {
 	shownav('founder', 'menu_optimizer');
 	showsubmenu('menu_optimizer');
@@ -75,10 +85,11 @@ if($operation) {
 	$optimizer = new optimizer($type);
 }
 
-$_GET['anchor'] = in_array($_GET['anchor'], array('security', 'performance')) ? $_GET['anchor'] : 'security';
+$_GET['anchor'] = in_array($_GET['anchor'], array('security', 'serversec', 'performance')) ? $_GET['anchor'] : 'security';
 $current = array($_GET['anchor'] => 1);
 showmenu('nav_founder_optimizer', array(
 	array('founder_optimizer_security', 'optimizer&anchor=security', $current['security']),
+	array('founder_optimizer_serversec', 'optimizer&anchor=serversec', $current['serversec']),
 	array('founder_optimizer_performance', 'optimizer&anchor=performance', $current['performance']),
 ));
 
@@ -140,8 +151,8 @@ if($operation == 'optimize_unit') {
 
 	$checkrecordtime = C::t('common_optimizer')->fetch($check_record_time_key);
 
-	if(!$_GET['checking'] && $_GET['anchor'] == 'security') {
-		showtips('optimizer_security_tips');
+	if(!$_GET['checking']) {
+		showtips('optimizer_'.$_GET['anchor'].'_tips');
 	}
 
 	showtableheader();
diff --git a/upload/source/class/optimizer/optimizer_dos8p3.php b/upload/source/class/optimizer/optimizer_dos8p3.php
new file mode 100644
index 0000000000000000000000000000000000000000..fe127b5764e2bd629b20e72e51f3599de3facd71
--- /dev/null
+++ b/upload/source/class/optimizer/optimizer_dos8p3.php
@@ -0,0 +1,43 @@
+<?php
+
+/**
+ *      [Discuz!] (C)2001-2099 Comsenz Inc.
+ *      This is NOT a freeware, use is subject to license terms
+ *
+ *      $Id$
+ */
+
+if(!defined('IN_DISCUZ')) {
+	exit('Access Denied');
+}
+
+class optimizer_dos8p3 {
+
+	public function __construct() {
+
+	}
+
+	public function check() {
+		global $_G;
+		$status = false;
+		if(strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
+			$testurl = $_G['siteurl'] . 'API/JAVASC~1/ADVERT~1.PHP';
+			$content = dfsockopen($testurl);
+			if(strpos($content, 'Access Denied') !== false) {
+				$status = true;
+			}
+		}
+		if($status) {
+			$return = array('status' => 1, 'type' =>'header', 'lang' => lang('optimizer', 'optimizer_dos8p3_need'));
+		} else {
+			$return = array('status' => 0, 'type' =>'none', 'lang' => lang('optimizer', 'optimizer_dos8p3_no_need'));
+		}
+		return $return;
+	}
+
+	public function optimizer() {
+		cpmsg('optimizer_dos8p3_optimizer', '', 'error');
+	}
+}
+
+?>
\ No newline at end of file
diff --git a/upload/source/class/optimizer/optimizer_httphost.php b/upload/source/class/optimizer/optimizer_httphost.php
new file mode 100644
index 0000000000000000000000000000000000000000..abe1842f0c01db3fd4771b20baedb0c242e53be7
--- /dev/null
+++ b/upload/source/class/optimizer/optimizer_httphost.php
@@ -0,0 +1,44 @@
+<?php
+
+/**
+ *      [Discuz!] (C)2001-2099 Comsenz Inc.
+ *      This is NOT a freeware, use is subject to license terms
+ *
+ *      $Id$
+ */
+
+if(!defined('IN_DISCUZ')) {
+	exit('Access Denied');
+}
+
+class optimizer_httphost {
+
+	public function __construct() {
+
+	}
+
+	public function check() {
+		global $_G;
+		$status = false;
+		if(!empty($_SERVER['HTTP_HOST'])) {
+			$clientip = gethostbyname($_SERVER['HTTP_HOST']);
+			$testurl = str_replace($_SERVER['HTTP_HOST'], $clientip, $_G['siteurl']);
+			$content = dfsockopen($testurl);
+			if(strpos($content, 'Discuz!') === false) {
+				$status = true;
+			}
+		}
+		if($status) {
+			$return = array('status' => 1, 'type' =>'header', 'lang' => lang('optimizer', 'optimizer_httphost_need'));
+		} else {
+			$return = array('status' => 0, 'type' =>'none', 'lang' => lang('optimizer', 'optimizer_httphost_no_need'));
+		}
+		return $return;
+	}
+
+	public function optimizer() {
+		cpmsg('optimizer_httphost_optimizer', '', 'error');
+	}
+}
+
+?>
\ No newline at end of file
diff --git a/upload/source/language/lang_admincp.php b/upload/source/language/lang_admincp.php
index d5fb9a1da79bd71380f192f02835759a6eb19a9e..eb6bd5c76f2fc8264846de7b254afd04531fc119 100644
--- a/upload/source/language/lang_admincp.php
+++ b/upload/source/language/lang_admincp.php
@@ -609,6 +609,7 @@ $lang = array
 	'founder_optimizer_status' => '状态',
 
 	'founder_optimizer_security' => '安全测试',
+	'founder_optimizer_serversec' => '底层安全',
 	'founder_optimizer_performance' => '性能优化',
 	'founder_optimizer_low' => '低',
 	'founder_optimizer_middle' => '中',
@@ -6884,6 +6885,8 @@ $lang = array
 	'postsplit_manage_submit' => '确认分表',
 
 	'optimizer_security_tips' => '<li>体检可以帮助您发现网站问题，消除安全风险</li><li>设置项安全检测</li><li>安装插件安全及更新检测</li>',
+	'optimizer_serversec_tips' => '<li>体检可以帮助您发现网站底层问题，消除安全风险</li>',
+	'optimizer_performance_tips' => '<li>体检可以帮助您发现网站性能问题，增强网站性能</li>',
 	'optimizer_check_unit_optimizer_plugin' => '检测应用是否有新的更新',
 	'optimizer_check_unit_optimizer_upgrade' => '查看是否有新的产品版本',
 	'optimizer_check_unit_optimizer_patch' => '检测产品是有有漏洞补丁发布',
@@ -6919,6 +6922,8 @@ $lang = array
 	'optimizer_check_unit_optimizer_security_daily' => '检测是否开启防水墙每日优化计划任务',
 	'optimizer_check_unit_optimizer_postqqonly' => '检测发帖需要绑定QQ号检测是否开启',
 	'optimizer_check_unit_optimizer_aggid' => '检测“管理员，超级版主，版主”QQ登录检测是否开启',
+	'optimizer_check_unit_optimizer_dos8p3' => '检测 DOS 8.3 文件名支持是否开启',
+	'optimizer_check_unit_optimizer_httphost' => '检测空 HOST 访问是否开启',
 
 	'domain_topic' => '专题',
 	'domain_home' => '个人空间',
diff --git a/upload/source/language/lang_admincp_menu.php b/upload/source/language/lang_admincp_menu.php
index d49e140bbd7ed5f601b7c74ec2cdb12e396ca580..5dc653f533d6b857534f7ba0b073608a7ca3ac79 100644
--- a/upload/source/language/lang_admincp_menu.php
+++ b/upload/source/language/lang_admincp_menu.php
@@ -136,6 +136,7 @@ $lang = array
 	'menu_upgrade' => '在线升级',
 	'menu_optimizer' => '优化大师',
 	'menu_security' => '安全大师',
+	'menu_serversec' => '底层安全',
 
 	'menu_addons' => '应用中心',
 	'menu_plugins' => '插件管理',
diff --git a/upload/source/language/lang_admincp_msg.php b/upload/source/language/lang_admincp_msg.php
index 2cf921f5cc0161f4725aa4a81940a6b9c856c756..8628e77601a12a4a800a48da48ef0042d02ef193 100644
--- a/upload/source/language/lang_admincp_msg.php
+++ b/upload/source/language/lang_admincp_msg.php
@@ -642,6 +642,8 @@ $lang = array (
   'admincp_makehtml_cleanhtml_succeed' => '清理HTML文件成功。',
   'admincp_makehtml_cleanhtml_choose_item' => '对不起，请选择需要清理HTML文件。',
   'attach_readmod_error' => '抱歉，当前的本地文件读取模式会导致部分浏览器下视频播放异常，如需开启附件URL地址、媒体附件播放，请在 config_global.php 内修改本地文件读取模式为 1 或 4 后再试',
+  'optimizer_dos8p3_optimizer' => '请您根据您底层的情况正确选择技术路线和解决方案, 通过对底层的正确配置以关闭 DOS 8.3 文件名支持',
+  'optimizer_httphost_optimizer' => '请您根据您底层的情况正确选择技术路线和解决方案, 通过对底层的正确配置以关闭空 HOST 头支持',
 );
 
 ?>
\ No newline at end of file
diff --git a/upload/source/language/lang_optimizer.php b/upload/source/language/lang_optimizer.php
index a94d3e353ed294f7ea5b30a0554d45c97b28602a..79712f6a2b43ebd067685c1c13a0add14d2dfdb1 100644
--- a/upload/source/language/lang_optimizer.php
+++ b/upload/source/language/lang_optimizer.php
@@ -119,5 +119,9 @@ $lang = array
 	'optimizer_white_list_no_need' => '未设置白名单',
 	'optimizer_security_daily_need' => '开启防水墙每日优化，可清除删帖后首页痕迹',
 	'optimizer_white_list_no_need' => '该计划任务已开启',
+	'optimizer_dos8p3_need' => 'DOS 8.3 文件名支持错误开启',
+	'optimizer_dos8p3_no_need' => 'DOS 8.3 文件名支持未开启或底层不支持',
+	'optimizer_httphost_need' => '空 HOST 访问已开启',
+	'optimizer_httphost_no_need' => '空 HOST 访问支持未开启或底层不支持',
 );
 ?>
\ No newline at end of file