The objective of web scanning can differ from hacking to securing the website. Web security scanner creates a mess on the targeted server and use heavy bandwidth of the server during scanning process.
Now I am going to show how to block Web Security Scanners from Scanning your website for vulnerabilities from hackers.
Just add the below script in to the .htaccess file of your website and it will block the security scanners like w3af, Acunetix, nessus, SQLmap etc.
RewriteEngine On
<IfModule mod_rewrite.c>
RewriteCond %{HTTP_USER_AGENT} ^w3af.org [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^w3af.sourceforge.net [NC,OR]
RewriteCond %{HTTP_USER_AGENT} dirbuster [NC,OR]
RewriteCond %{HTTP_USER_AGENT} nikto [NC,OR]
RewriteCond %{HTTP_USER_AGENT} SF [OR]
RewriteCond %{HTTP_USER_AGENT} sqlmap [NC,OR]
RewriteCond %{HTTP_USER_AGENT} fimap [NC,OR]
RewriteCond %{HTTP_USER_AGENT} nessus [NC,OR]
RewriteCond %{HTTP_USER_AGENT} whatweb [NC,OR]
RewriteCond %{HTTP_USER_AGENT} Openvas [NC,OR]
RewriteCond %{HTTP_USER_AGENT} jbrofuzz [NC,OR]
RewriteCond %{HTTP_USER_AGENT} libwhisker [NC,OR]
RewriteCond %{HTTP_USER_AGENT} webshag [NC,OR]
RewriteCond %{HTTP:Acunetix-Product} ^WVS
RewriteRule ^.* http://127.0.0.1/ [R=301,L]
</IfModule>
<IfModule mod_rewrite.c>
RewriteCond %{HTTP_USER_AGENT} ^w3af.org [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^w3af.sourceforge.net [NC,OR]
RewriteCond %{HTTP_USER_AGENT} dirbuster [NC,OR]
RewriteCond %{HTTP_USER_AGENT} nikto [NC,OR]
RewriteCond %{HTTP_USER_AGENT} SF [OR]
RewriteCond %{HTTP_USER_AGENT} sqlmap [NC,OR]
RewriteCond %{HTTP_USER_AGENT} fimap [NC,OR]
RewriteCond %{HTTP_USER_AGENT} nessus [NC,OR]
RewriteCond %{HTTP_USER_AGENT} whatweb [NC,OR]
RewriteCond %{HTTP_USER_AGENT} Openvas [NC,OR]
RewriteCond %{HTTP_USER_AGENT} jbrofuzz [NC,OR]
RewriteCond %{HTTP_USER_AGENT} libwhisker [NC,OR]
RewriteCond %{HTTP_USER_AGENT} webshag [NC,OR]
RewriteCond %{HTTP:Acunetix-Product} ^WVS
RewriteRule ^.* http://127.0.0.1/ [R=301,L]
</IfModule>
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