.htaccess Bad Bot Block
ErrorDocument 403 /403.html
SetEnvIfNoCase ^User-Agent$ .*(useragent1|useragent2|useragent3) BADBOT
SetEnvIfNoCase ^User-Agent$ .*(useragent4|useragent5|useragent6) BADBOT
SetEnvIf remote_addr xx.xx.xx.xx BADBOT
Deny from env=BADBOT