# (C) Copyright 2001-2004, Martin Roesch, Brian Caswell, et al. # All rights reserved. # $Id: other-ids.rules,v 1.10 2004/07/23 20:15:44 bmc 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 975 alert 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;)