Security Strategy: Advanced Prevention of PHP Script Trojans_PHP Tutorial

1. Prevent jumping out of the web directory


First modify httpd.conf. If you only allow your php script to operate in the web directory, you can also modify the httpd.conf file to limit the operation path of php. For example, if your web directory is /usr/local/apache/htdocs, then add these lines to httpd.conf:


php_admin_value open_basedir /usr/local/apache/htdocs


In this way, if the script wants to read files other than /usr/local/apache/htdocs, it will not be allowed. If the error display is turned on, an error like this will be prompted:


Warning: open_basedir restriction in effect. File is in wrong directory in /usr/local/apache/htdocs/open.php on line 4 and so on.


2. Prevent php Trojan from executing webshell


Turn on safe_mode,


Set
in php.ini

disable_functions= passthru,exec,shell_exec,system


You can choose one of the two, or both


3. Prevent php Trojan from reading and writing file directories



in php.ini

disable_functions= passthru,exec,shell_exec,system


Add the php file processing function at the end


Mainly include

http://www.bkjia.com/PHPjc/629790.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/629790.htmlTechArticle1. To prevent jumping out of the web directory, first modify httpd.conf. If you only allow your php scripts to be in the web directory In this operation, you can also modify the httpd.conf file to limit the operation path of php. For example, your...