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https://github.com/Security-Onion-Solutions/securityonion.git
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41 lines
1.1 KiB
Bash
41 lines
1.1 KiB
Bash
#!/bin/bash
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#
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# Copyright Security Onion Solutions LLC and/or licensed to Security Onion Solutions LLC under one
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# or more contributor license agreements. Licensed under the Elastic License 2.0 as shown at
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# https://securityonion.net/license; you may not use this file except in compliance with the
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# Elastic License 2.0.
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# if this script isn't already running
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if [[ ! "`pidof -x $(basename $0) -o %PPID`" ]]; then
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SURILOG=$(tac /var/log/suricata/stats.log | grep kernel | head -4)
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CHECKIT=$(echo $SURILOG | grep -o 'drop' | wc -l)
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if [ $CHECKIT == 2 ]; then
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declare RESULT=($SURILOG)
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CURRENTDROP=${RESULT[4]}
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PASTDROP=${RESULT[14]}
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DROPPED=$((CURRENTDROP - PASTDROP))
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if [ $DROPPED == 0 ]; then
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LOSS=0
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echo "suridrop drop=0"
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else
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CURRENTPACKETS=${RESULT[9]}
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PASTPACKETS=${RESULT[19]}
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TOTALCURRENT=$((CURRENTPACKETS + CURRENTDROP))
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TOTALPAST=$((PASTPACKETS + PASTDROP))
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TOTAL=$((TOTALCURRENT - TOTALPAST))
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LOSS=$(echo 4 k $DROPPED $TOTAL / p | dc)
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echo "suridrop drop=$LOSS"
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fi
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fi
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fi
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exit 0
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