There are the Emerging Threats.net Open rulesets.

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Icon  Name                                                                   Last modified      Size  Description
[DIR] blockrules/ 2015-08-03 00:30 - [DIR] changelogs/ 2015-08-03 17:41 - [DIR] fwrules/ 2014-08-11 13:22 - [DIR] open-nogpl/ 2012-09-25 21:54 - [DIR] open/ 2012-09-25 21:54 - [DIR] projects/ 2011-01-17 13:34 - [DIR] research/ 2013-12-30 21:43 - [TXT] version.txt 2015-08-03 17:41 5
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