Block Semalt Globally

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#1 Sun, 03/01/2015 - 16:26
webwzrd

Block Semalt Globally

I'm getting clients asking me to block the garbage crawlers semalt.semalt.com and buttons-for-website.com from their site. This can easily be done in .htaccess but I'm wondering how I can block them server wide?

Sun, 03/01/2015 - 18:26
webwzrd

Found a good solution. I already use ModSecurity, seemed this was the perfect tool for the job. I found some custom rules written for referrer spammers.

It seems to be working well...

[Sun Mar 01 18:14:42 2015] [error] [client 87.20.151.203] ModSecurity: [file "/etc/httpd/modsecurity.d/flameeyes_30_refererspam.conf"] [line "14"] [id "433001"] [msg "Known referer spammers."] Access denied with code 403 (phase 1). Matched phrase "semalt.com/" at REQUEST_HEADERS:Referer. [hostname "mydomain.com"] [uri "/"] [unique_id "VPOrcriaLzIAABc-C2AAAAAO"]

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