[gentoo-user] htaccess file

[Joseph]

I have in my main "htaccess" file the following condition, is it still needed:
---------code------------
# The following makes adjustments to the SSL protocol for Internet
# Explorer browsers

<IfModule mod_rewrite.c>
RedirectMatch permanent (.*)cmd.exe(.*)$ http://www.microsoft.com
RedirectMatch permanent (.*)root.exe(.*)$ http://www.microsoft.com
RedirectMatch permanent (.*)\/_vti_bin\/(.*)$ http://www.microsoft.com
RedirectMatch permanent (.*)\/scripts\/\.\.(.*)$ http://www.microsoft.com
RedirectMatch permanent (.*)\/_mem_bin\/(.*)$ http://www.microsoft.com
RedirectMatch permanent (.*)\/msadc\/(.*)$ http://www.microsoft.com
RedirectMatch permanent (.*)\/MSADC\/(.*)$ http://www.microsoft.com
RedirectMatch permanent (.*)\/c\/winnt\/(.*)$ http://www.microsoft.com
RedirectMatch permanent (.*)\/d\/winnt\/(.*)$ http://www.microsoft.com
RedirectMatch permanent (.*)\/x90\/(.*)$ http://www.microsoft.com
</IfModule>

<IfModule mod_setenvif.c>
   <IfDefine SSL>
     SetEnvIf User-Agent ".*MSIE.*" \
              nokeepalive ssl-unclean-shutdown \
              downgrade-1.0 force-response-1.0
   </IfDefine>
</IfModule>
------end code--------------


Can somebody enlighten me what below RewriteCond protect against? :-/

RewriteEngine On
RewriteCond %{QUERY_STRING} :/ [NC]
RewriteRule ^ - [F]

-- 
#Joseph
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