2008-12-16 07:40:30 +01:00
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This plugin checks if a user of your web application is listed in DNSBLs
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(DNS Blackhole Lists). These are lists of misbehaving IP addresses.
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There are many DNSBLs, some are more aggressive than others.
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More information at http://en.wikipedia.org/wiki/DNSBL
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2007-01-22 14:43:50 +01:00
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This filter will result in one DNS request for every blocklist that you have
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configured. This might be problematic for sites under heavy load, although this
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plugin has been used on high-traffic sites without any problem. One DNS
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request takes a few miliseconds to complete, after all.
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INSTALLATION
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2008-12-16 07:40:30 +01:00
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1. execute "script/plugin install http://www.spacebabies.nl/svn/dnsbl_check"
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2. add "before_filter :dnsbl_check" to controllers that need checking
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3. restart your application.
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2007-01-22 14:43:50 +01:00
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VERSION HISTORY
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2008-12-16 07:40:30 +01:00
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0.1 18 June 2006 Initial release
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0.2 10 June 2006 Renamed to dnsbl_check, bugfix
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0.3 20 June 2006 Removed sorbs from distribution, was not supposed to be included (too aggressive)
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0.4 18 July 2006 Explicit return false added, moved to a per-controller basis (not global anymore)
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1.0 16 August 2006 Renamed 0.4 to 1.0. I have been using the plugin very succesfully for months now.
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1.1 17 October 2006 Multithreaded version
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1.2 23 October 2006 Using the native Ruby resolver library for better multithreaded support
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1.2.1 25 October 2006 Accepts a wider range of dns responses
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1.2.2 11 December 2006 dnsbls are seemingly under attack, added code to cope with failing service
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1.3 30 November 2007 Chique 403 template, moved to Subversion based installation
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2007-01-22 14:43:50 +01:00
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MORE INFORMATION
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http://spacebabies.nl/dnsbl_check/
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joost@spacebabies.nl
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