View source for Htaccess examples (security)

== Other useful settings ==
<source lang="apache">
 ServerSignature Off
 RewriteCond %{REQUEST_METHOD} ^(HEAD|TRACE|DELETE|TRACK) [NC,OR]
 RewriteCond %{THE_REQUEST} (\\r|\\n|%0A|%0D) [NC,OR]

 RewriteCond %{HTTP_REFERER} (<|>|’|%0A|%0D|%27|%3C|%3E|%00) [NC,OR]
 RewriteCond %{HTTP_COOKIE} (<|>|’|%0A|%0D|%27|%3C|%3E|%00) [NC,OR]
 RewriteCond %{REQUEST_URI} ^/(,|;|:|<|>|”>|”<|/|\\\.\.\\).{0,9999} [NC,OR]

 RewriteCond %{HTTP_USER_AGENT} ^$ [OR]
 RewriteCond %{HTTP_USER_AGENT} ^(java|curl|wget) [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} (winhttp|HTTrack|clshttp|archiver|loader|email|harvest|extract|grab|miner) [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} (libwww-perl|curl|wget|python|nikto|scan) [NC,OR]
 RewriteCond %{HTTP_USER_AGENT} (<|>|’|%0A|%0D|%27|%3C|%3E|%00) [NC,OR]
 
 #Block mySQL injects
 RewriteCond %{QUERY_STRING} (;|<|>|’|”|\)|%0A|%0D|%22|%27|%3C|%3E|%00).*(/\*|union|select|insert|cast|set|declare|drop|update|md5|benchmark) [NC,OR]

 RewriteCond %{QUERY_STRING} \.\./\.\. [OR]

 RewriteCond %{QUERY_STRING} (localhost|loopback|127\.0\.0\.1) [NC,OR]
 RewriteCond %{QUERY_STRING} \.[a-z0-9] [NC,OR]
 RewriteCond %{QUERY_STRING} (<|>|’|%0A|%0D|%27|%3C|%3E|%00) [NC]
 # Note: The final RewriteCond must NOT use the [OR] flag.

 # Return 403 Forbidden error.
 RewriteRule .* index.php [F]
</source>