.htaccess - how to block all bot whose useragent does not contain alphabeth? -


i looking ways kill bots. found 1 interesting

http://www.allthingsdemocrat.com/block-bad-bots-in-htaccess.txt

well, @ code , blocks many ips.

then saw logs , see many have strange user agents these:

1.187.222.161 1.190.102.170 1.204.110.71 1.204.237.58 1.204.90.93 1.204.92.8 1.205.56.160 1.207.62.137 1.25.184.201 1.254.182.168 1.26.85.177 1.27.15.31 1.28.223.16 1.29.133.186 1.30.209.119 1.31.68.200 1.46.202.207 1.48.121.252 1.53.196.135 1.57.43.10 1.58.168.149 1.59.17.21

so user agent numbers. no alpha numeric.

i want block such user agent.

setenvifnocase user-agent "^192.comagent.*" bad_bot

for example block bot starting 192.comagent

how block bot doesn't contain alphabet

would do

setenvifnocase user-agent "!(([a-z]|[a-z]).+)" bad_bot

i wonder if it's correct?

basically combine [a-z]|[a-z] mean alphabet. ([a-z]|[a-z]).+ means contains @ least one. add ! see if not one.

will work?


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