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In cPanel there is a bot:

 

"Unknown robot (identified by 'bot*')"

 

and it's using 30% of of the bandwidth

 

I used mod_rewrite to block a number of known bad bots, and added the line:

RewriteCond %{HTTP_USER_AGENT} ^bot*

 

The bandwidth used by bot* did decrease (from about 40%), but it didn't stop

 

I'm not sure if I'm doing this right, whether * is a wildcard, and whether I should be putting bot.* instead of bot*, or if it's an actual asterisk and I should be escaping it.

 

Or maybe it's a whole range of different bots, all starting with 'bot'

 

Or is it possible (or desirable) to block all robots except Google, yahoo and MSN?

 

Any ideas?

 

You would do something like this:

RewriteCond %{HTTP_USER_AGENT} ^bot* [NC]
RewriteRule .* - [F,L]

 

The NC makes it case insensitive, the F means it'll give a 403 Forbidden response code and the L means the mod_rewrite chain stops on a successful match.

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