# Copyright 2001-2005 Sourcefire, Inc. All Rights Reserved## This file may contain proprietary rules that were created, tested and# certified by Sourcefire, Inc. (the "VRT Certified Rules") as well as# rules that were created by Sourcefire and other third parties and# distributed under the GNU General Public License (the "GPL Rules").  The# VRT Certified Rules contained in this file are the property of# Sourcefire, Inc. Copyright 2005 Sourcefire, Inc. All Rights Reserved.# The GPL Rules created by Sourcefire, Inc. are the property of# Sourcefire, Inc. Copyright 2002-2005 Sourcefire, Inc. All Rights# Reserved.  All other GPL Rules are owned and copyrighted by their# respective owners (please see www.snort.org/contributors for a list of# owners and their respective copyrights).  In order to determine what# rules are VRT Certified Rules or GPL Rules, please refer to the VRT# Certified Rules License Agreement.### $Id: other-ids.rules,v 1.10.2.1.2.1 2005/05/16 22:17:52 mwatchinski Exp $# ---------------# OTHER-IDS RULES# ---------------# These signatures look for uses of other IDSs.## These signatures serve two purposes.#  1) If you are "IDS GUY" for a company, and someone else sets up an IDS#     without letting you know, thats bad.#  2) If you are "pen-tester", this is a good way to find out what IDS#     systems your target is using after you have gained access to their#     network.#alert tcp $HOME_NET 902 -> $EXTERNAL_NET any (msg:"OTHER-IDS ISS RealSecure 6 event collector connection attempt"; flow:from_server,established; content:"6ISS ECNRA Built-In Provider, Strong Encryption"; depth:70; offset:30; nocase; classtype:successful-recon-limited; sid:1760; rev:3;)alert tcp $HOME_NET 2998 -> $EXTERNAL_NET any (msg:"OTHER-IDS ISS RealSecure 6 daemon connection attempt"; flow:from_server,established; content:"6ISS ECNRA Built-In Provider, Strong Encryption"; depth:70; offset:30; nocase; classtype:successful-recon-limited; sid:1761; rev:3;)# To limit false positives, limit to the default port of 975alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"OTHER-IDS SecureNetPro traffic"; flow:established; content:"|00|g|00 01 00 03|"; depth:6; classtype:bad-unknown; sid:1629; rev:6;)