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(Spam blocking: Questy Captcha== I see you've spambots making lots of new accounts and occasionally making spam pages. (Special:RecentChanges) I installed ConfirmEdit on my wiki ( http://en.swpat.org/ ) and spam has dropped to nearly zero. Conf) |
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==Spam blocking: Questy Captcha== |
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I see you've spambots making lots of new accounts and occasionally making spam pages. ([[Special:RecentChanges]]) |
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I installed ConfirmEdit (it's free-as-in-freedom) on my wiki ( http://en.swpat.org/ ) and spam has dropped to nearly zero. ConfirmEdit offers a few captchas but I think QuestyCaptcha is by far the best. It requires new contributors to answer a question if they want to edit anonymously or make an account. There are no questions supplied, so each wiki has to write their own. The result is simple for a human but practically impossible for a bot. |
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# Download it here: http://www.mediawiki.org/wiki/Special:ExtensionDistributor/ConfirmEdit |
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# mv ConfirmEdit-MW1.17-r77902.tar.gz WIKIDIRECTORY/extensions/ |
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# untar it there |
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# Put these lines at the end of LocalSettings.php (change or add as many questions as you like): |
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require_once( "$IP/extensions/ConfirmEdit/ConfirmEdit.php" ); |
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require_once( "$IP/extensions/ConfirmEdit/QuestyCaptcha.php"); |
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$wgCaptchaClass = 'QuestyCaptcha'; |
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$wgCaptchaQuestions[] = array( 'question' => "What colour is grass", 'answer' => "green" ); |
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$wgCaptchaQuestions[] = array( 'question' => "What do most people sleep in at night? (3 letters)", 'answer' => "bed" ); |
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5. In WIKIDIRECTORY/extensions/ConfirmEdit/ConfirmEdit.php, make two changes:<br /> |
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*Search for the following, and change it to "true": |
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$wgGroupPermissions['user' ]['skipcaptcha'] = false; |
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*Search for the following, and change it also to "true": |
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$wgCaptchaTriggers['edit'] = false; // Would check on every edit |
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I do still get a trickle of spam, which I found surprising. Maybe some of the spam networks that target my wiki include groups of humans, but only a small fraction have good enough English to answer my silly questions. |
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In contrast, requiring email confirmation is inconvenient for well-intentioned visitors and probably doesn't block any spambots. Automating the response is probably trivial for a spambot author (although I haven't tested to see if it does reduce spam). In any case, QuestyCaptcha should be enough. |
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Hope that helps, and best of luck with GNU MediaGoblin! [[User:Ciaran|Ciaran]] 17:58, 2 May 2012 (EDT) |
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