Ban certain IPs from auto downloading my websites

but still maintain good bots like googlebot from crawling my site

[Imaster]

I have a huge website which is dynamically generated. I have noticed over a period of time that there are stupid web downloaders, etc which have been aggressively downloading my website thus enormously increasing the load on the server and slowing down my site.

I would like to auto add such ips to my .htaccess file "deny from xx.xx.xx.xx" statement.

But I would still like to keep specific bots like googlebots, etc from crawling.

How do I do this?

[jdMorgan]

Two suggestions from previous threads here at WebmasterWorld:

Install AlexK's modified version of xlcus' php script to ban runaway crawlers [webmasterworld.com]. This script detects excessively-fast consecutive page requests.

Install Key_master's bad-bot script [webmasterworld.com] (perl), or birdman's php version [webmasterworld.com] of it. These scripts trap malicious visitors based on robots.txt violations.

Adding exclusions to avoid banning *any* major 'bot is a good idea.

Jim

[Imaster]

wow man. You are awesome. Thanks I will check it out.