CodingForums.com - not sure what this rewrite does

Hi this must be a good thing i think it has to do with base 64 encoding protection but im not really sure what it does. this is in one of my subdomains, i added it awhile back from a converstion with my old host tech support but again i would like to put some doc in the htaccess file as to what it does so i can remember lol..

follow symlinks is about this, and i read about that, that is a good thing so i will leave that.

Code:



RewriteEngine On

RewriteCond %{QUERY_STRING} base64_encode.*\(.*\) [OR]

RewriteCond %{QUERY_STRING} (\<|%3C).*script.*(\>|%3E) [NC,OR]

RewriteCond %{QUERY_STRING} (\<|%3C).*iframe.*(\>|%3E) [NC,OR]

RewriteCond %{QUERY_STRING} GLOBALS(=|\[|\%[0-9A-Z]{0,2}) [OR]

RewriteCond %{QUERY_STRING} _REQUEST(=|\[|\%[0-9A-Z]{0,2})

RewriteRule ^(.*)$ index_error.php [F,L]

RewriteCond %{REQUEST_METHOD} ^(TRACE|TRACK)

RewriteRule .* - [F]