This file is indexed.

/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;)