How to Block Visitors Comming From Specific Site/search engine

I wanna block all visitors coming from:websearch.cs.com
RewriteEngine on
RewriteCond %{HTTP_REFERER} websearch.cs.com [NC]
RewriteRule .* - [F]

and put it on site folder (where for example my index.html is and all site files)
but it appears not to work ?

any better solution.

Thanks

 

Also does it works for blocking keywords
RewriteEngine on
RewriteCond %{HTTP_REFERER} (viagra) [NC,OR]
RewriteRule .* - [F]


also does above (first post) removes visitors from all pages of that domain or only main ( i need to restrict all search results).

thanks

 

1.
whats the URL / site where you have your .htaccess installed ?

2.
make sure the site to exclude EXISTS as posted by you

if I enter your search engine URL as below, then I get a redirect to

http://webcenters.netscape.compuserve.com/search/default.jsp

Code (markup):

hence a referrer would show a different referrar site than you published.

 

If you know their IP address you could try editing your .htaccess file to include:

deny from (and add the IP address here)

 

You have a syntax error in second line:

instead:
RewriteCond %{HTTP_REFERER} websearch.cs.com [NC]

use:

RewriteCond %{HTTP_REFERER} websearch\.cs.com [NC]


should work ok now...

 

websearch.cs.com/ is using ip : 205.188.98.199
if u using CSF, enter this ip to deny on CSF and it will blocked from ur server