fsockopen函数被PHPDDOS利用攻击的解决办法

 通用解决方法：

找到程序里的 fsockopen 函数，替换为：pfsockopen，即可解决所有问题，两个函数的区别在于 pfsockopen 保持 keep-alive，使得黑客无法进行 连接数攻击。 已知使用 fsockopen 函数的程序文件路径（在fsockopen 前加 p, 即fsockopen 修改为 pfsockopen  即可 ）[其他程序可通过错误提示的文件路径查看更改]： Discuz X2  安装提示不支持fsockopen： 将 /include/install_var.php  文件里的 $func_items = array(‘mysql_connect’, ‘fsockopen‘, ‘gethostbyname’, ‘file_get_contents’, ‘xml_parser_create’); 替换为： $func_items = array(‘mysql_connect’, ‘pfsockopen‘, ‘gethostbyname’, ‘file_get_contents’, ‘xml_parser_create’); 即可正常安装。 X2全部包含fsockopen的文件（如果用邮件只修改邮件即可，其他文件都是自动判断 pfsockopen）：
\api\manyou\Manyou.php \api\trade\api_alipay.php \install\include\install_function.php \install\include\install_lang.php \install\include\install_var.php \source\admincp\admincp_addons.php \source\admincp\admincp_checktools.php \source\admincp\admincp_cloud.php \source\admincp\admincp_misc.php \source\admincp\cloud\cloud_doctor.php \source\class\class_image.php \source\class\class_sphinx.php \source\class\block\xml\block_xml.php \source\function\function_connect.php \source\function\function_core.php \source\function\function_filesock.php \source\function\function_importdata.php \source\function\function_mail.php      邮件相关 \source\function\function_plugin.php \source\include\portalcp\portalcp_upload.php \source\language\lang_admincp_cloud.php \source\module\forum\forum_ajax.php \source\module\misc\misc_manyou.php \uc_client\client.php \uc_client\lib\sendmail.inc.php         邮件相关 \uc_client\model\misc.php \uc_server\install\func.inc.php \uc_server\install\lang.inc.php \uc_server\lib\sendmail.inc.php         邮件相关 \uc_server\model\misc.php  Discuz 品牌空间不能安装，提示UC地址不正确： 修改 /install/func.inc.php 里的 fsockopen函数为 pfsockopen Discuz 7.2：(非首次安装，可以只改绿色部分。) 问题：使用 uc 不能登录 ， fsockopen函数位于： include\global.func.php(240): $fp = @fsockopen(($ip ? $ip : $host), $port, $errno, $errstr, $timeout);include\sendmail.inc.php(54): if(!$fp = fsockopen($mail['server'], $mail['port'], $errno, $errstr, 30)) {install\func.inc.php(803): $fp = @fsockopen(($ip ? $ip : $host), $port, $errno, $errstr, $timeout);install\var.inc.php(70): $func_items = array('mysql_connect', 'fsockopen', 'gethostbyname', 'file_get_contents', 'xml_parser_create');uc_client\client.php(211): $fp = @fsockopen(($ip ? $ip : $host), $port, $errno, $errstr, $timeout);uc_client\lib\sendmail.inc.php(40): if(!$fp = fsockopen($mail_setting['mailserver'], $mail_setting['mailport'], $errno, $errstr, 30)) {uc_client\model\misc.php(97): $fp = @fsockopen(($ip ? $ip : $host), $port, $errno, $errstr, $timeout);uc_server\lib\sendmail.inc.php(40): if(!$fp = fsockopen($mail_setting['mailserver'], $mail_setting['mailport'], $errno, $errstr, 30)) {uc_server\model\misc.php(94): $fp = @fsockopen(($ip ? $ip : $host), $port, $errno, $errstr, $timeout);
DEDECMS 问答积分功能出现 service.dedecms.com： 修改   /ask/data/scores.inc.php 里的 fsockopen 为 pfsockopen 附带dedecms 全部含 fsockopen 的文件列表： ./include/dedehttpdown.class.php: $this->m_fp = @fsockopen($this->m_host, $this->m_port, $errno, $errstr,10);./include/sphinxclient.class.php: $fp = @fsockopen ( $host , $port, $errno, $errstr );./include/sphinxclient.class.php: $fp = @fsockopen ( $host , $port, $errno, $errstr, $this->_timeout );./include/dedecollection.func.php: $m_fp = fsockopen($ghost, 80, $errno, $err str,10);./include/dedecollection.func.php: $m_fp = fsockopen($ghost, 80, $errno, $err str,10) or die($ghost.'<br />');./include/mail.class.php: //is used in fsockopen()./include/mail.class.php: $this->sock = @fsockopen($this->relay_host, $th is->smtp_port, $errno, $errstr, $this->time_out);./include/mail.class.php: $this->sock = @fsockopen($host, $this->smtp _port, $errno, $errstr, $this->time_out);./ask/data/scores.inc.php: $fp = fsockopen($host,80,$errno,$errstr,30);./dede/module_main.php: $fp = fsockopen('www.dedecms.com',80,$errno,$errs tr,30);./dede/api_ucenter.php: $fp = @fsockopen(($host ? $host : $ip), $port, $errno, $ errstr, $timeout);./dede/plus_bshare.php: if (!$fp=@fsockopen($parse['host'],$parse['port'],$er rnum,$errstr,$timeout)) {./plus/bshare.php: if (!$fp=@fsockopen($parse['host'],$parse['port'],$errnum, $errstr,$timeout)) {