mirror of
https://github.com/Security-Onion-Solutions/securityonion.git
synced 2025-12-09 10:42:54 +01:00
49 lines
1.5 KiB
Bash
49 lines
1.5 KiB
Bash
#!/bin/bash
|
|
#
|
|
# Copyright 2014-2022 Security Onion Solutions, LLC
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
# This script returns the packets dropped by Zeek, but it isn't a percentage. $LOSS * 100 would be the percentage
|
|
|
|
# if this script isn't already running
|
|
if [[ ! "`pidof -x $(basename $0) -o %PPID`" ]]; then
|
|
|
|
ZEEKLOG=$(tac /host/nsm/zeek/logs/packetloss.log | head -2)
|
|
declare RESULT=($ZEEKLOG)
|
|
CURRENTDROP=${RESULT[3]}
|
|
# zeek likely not running if this is true
|
|
if [[ $CURRENTDROP == "rcvd:" ]]; then
|
|
CURRENTDROP=0
|
|
PASTDROP=0
|
|
DROPPED=0
|
|
else
|
|
PASTDROP=${RESULT[9]}
|
|
DROPPED=$((CURRENTDROP - PASTDROP))
|
|
fi
|
|
if [[ "$DROPPED" -le 0 ]]; then
|
|
LOSS=0
|
|
echo "zeekdrop drop=0"
|
|
else
|
|
CURRENTPACKETS=${RESULT[5]}
|
|
PASTPACKETS=${RESULT[11]}
|
|
TOTAL=$((CURRENTPACKETS - PASTPACKETS))
|
|
LOSS=$(echo 4 k $DROPPED $TOTAL / p | dc)
|
|
echo "zeekdrop drop=$LOSS"
|
|
fi
|
|
|
|
fi
|
|
|
|
exit 0
|