Threshold is an ORM to map to Snort 2.9.x threshold.conf files.
It currently supports all standalone snort filters generally found in a threshold configuration. These include suppressions, event_filters, and rate_filters as defined in Snort README.filters.
Stable (travis-ci passing) tags are release as gems, but are NOT marked as stable-0.1.0 or the like.
$> gem install threshold
This is an example Threshold accessing /tmp/threshold.conf for loading, appending a new suppression, validiating the configuration, and writing the changes back to the file (flush).
2.1.2 :001 > require 'threshold'
=> true
2.1.2 :002 > a = Threshold::Thresholds.new
=> []
2.1.2 :003 > a.file = '/tmp/threshold.conf'
=> "/tmp/threshold.conf"
2.1.2 :004 > a.loadfile
=> [{"SUPPRESSION"=>["suppress gen_id 1, sig_id 2"], "GID"=>["1", nil, nil], "SID"=>["2", nil, nil]}, {"SUPPRESSION"=>["suppress gen_id 444, sig_id 2"], "GID"=>["444", nil, nil], "SID"=>["2", nil, nil]}]
2.1.2 :005 > a.valid?
=> true
2.1.2 :006 > b = Threshold::Suppression.new
=> #<Threshold::Suppression:0x00000002a576f0>
2.1.2 :007 > b.gid=124
=> 124
2.1.2 :008 > b.sid=45544
=> 45544
2.1.2 :009 > a << b
=> [#<Threshold::Suppression:0x00000002a87b98 @gid=1, @sid=2>, #<Threshold::Suppression:0x00000002a846c8 @gid=444, @sid=2>, #<Threshold::Suppression:0x00000002a576f0 @gid=124, @sid=45544>]
2.1.2 :010 > a.flush
=> true Filtering the Threshold Object can be achieved with common Array like methods. (ex. reject )
require 'threshold'
a = Threshold::Thresholds.new
a.file = '/tmp/threshold.conf'
a.loadfile
a = a.reject{|t| t.gid==1}- See CONTRIBUTING.md