/etc/sagan-rules/arp.rules is in sagan-rules 10212010-r1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 | # Sagan arp.rules
# Copyright (c) 2009-2010, Softwink, Inc.
# All rights reserved.
#
# Please submit any custom rules or ideas to sagan-submit@softwink.com or the sagan-sigs mailing list
#
#*************************************************************
# 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.
#
#*************************************************************
# "arpalert" rules - http://www.arpalert.org
alert syslog $EXTERNAL_NET any -> $HOME_NET any (msg: "[ARP] arpalert - Detected new machine on the network"; content: "type=new"; classtype: suspicious-traffic; program: arpalert; reference: url,wiki.softwink.com/bin/view/Main/5000060; sid: 5000060; rev:1;)
alert syslog $EXTERNAL_NET any -> $HOME_NET any (msg:"[ARP] arpalert - Detected ip change"; content: "type=ip_change"; classtype: suspicious-traffic; program: arpalert; reference: url,wiki.softwink.com/bin/view/Main/5000061; sid: 5000061; rev:1;)
# "arpwatch" rules - http://en.wikipedia.org/wiki/Arpwatch
alert syslog $EXTERNAL_NET any -> $HOME_NET any (msg:"[ARP] arpwatch - Detected new machine on the network"; content: "new station"; classtype: suspicious-traffic; program: arpwatch; reference: url,wiki.softwink.com/bin/view/Main/5000062; sid: 5000062; rev:2;)
alert syslog $EXTERNAL_NET any -> $HOME_NET any (msg:"[ARP] arpwatch - 'flip flop' message."; content: "flip flop "; classtype: suspicious-traffic; program: arpwatch; reference: url,wiki.softwink.com/bin/view/Main/5000063; sid: 5000063; rev:1;)
alert syslog $EXTERNAL_NET any -> $HOME_NET any (msg:"[ARP] arpwatch - Exiting"; content: "reaper: pid"; classtype: program-error; program: arpwatch; reference: url,wiki.softwink.com/bin/view/Main/5000064; sid: 5000064; rev:1;)
alert syslog $EXTERNAL_NET any -> $HOME_NET any (msg:"[ARP] arpwatch - Changed network interface for IP address"; content: "changed ethernet address"; classtype: suspicious-traffic; program: arpwatch; reference: url,wiki.softwink.com/bin/view/Main/5000065; sid: 5000065; rev:1;)
alert syslog $EXTERNAL_NET any -> $HOME_NET any (msg:"[ARP] arpwatch - Startup/Exiting message"; pcre: "/exiting|Running as/"; classtype: not-suspicious; program: arpwatch; reference: url,wiki.softwink.com/bin/view/Main/5000066; sid: 5000066; rev:1;)
alert syslog $EXTERNAL_NET any -> $HOME_NET any (msg:"[ARP] arpwatch - Detected bad address len - ignored"; content: "sent bad addr len"; classtype: network-event; program: arpwatch; reference: url,wiki.softwink.com/bin/view/Main/5000067; sid: 5000067; rev:1;)
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