Emerging Threats Open

Emerging Threats splits its license by SID: GPLv2 below 3465, BSD from 2000000 to 2799999, and proprietary ETPRO from 2800000. Every rule indexed here falls in the BSD range.

Reproduced verbatim as published by Emerging Threats Open. This site indexes and links to these rules; it does not claim any rights in them.

# Emerging Threats 
#
# This distribution may contain rules under three different licenses. 
#
#  Rules with sids 1 through 3464, and 100000000 through 100000908 are under the GPLv2.
#  A copy of that license is available at http://www.gnu.org/licenses/gpl-2.0.html
#
#  Rules with sids 2000000 through 2799999 are from Emerging Threats and are covered under the BSD License 
#  as follows:
#
#*************************************************************
#  Copyright (c) 2003-2026, Emerging Threats
#  All rights reserved.
#  
#  Redistribution and use in source and binary forms, with or without modification, are permitted provided that the 
#  following conditions are met:
#  
#  * Redistributions of source code must retain the above copyright notice, this list of conditions and the following 
#    disclaimer.
#  * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the 
#    following disclaimer in the documentation and/or other materials provided with the distribution.
#  * Neither the name of the nor the names of its contributors may be used to endorse or promote products derived 
#    from this software without specific prior written permission.
#  
#  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS AS IS AND ANY EXPRESS OR IMPLIED WARRANTIES, 
#  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
#  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
#  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 
#  USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
#
#*************************************************************
#
#
#  Rules with sids 2800000 through 2900000 are provided by Emerging Threats Pro and are covered by the license
#  provided in this distribution titled ETPRO-License.txt
#
#