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git://git.acid.vegas/random.git
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27 lines
756 B
Bash
27 lines
756 B
Bash
#!/bin/sh
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interface=eth0
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dumpdir=/tmp/
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email="admin@domain.tld"
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subject="DDoS Notification: `hostname`"
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sender="admin@domain.tld"
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while /bin/true; do
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pkt_old=`grep $interface: /proc/net/dev | cut -d : -f2 | awk '{ print $2 }'`
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sleep 1
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pkt_new=`grep $interface: /proc/net/dev | cut -d : -f2 | awk '{ print $2 }'`
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pkt=$(( $pkt_new-$pkt_old ))
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echo -ne "\r$pkt packets/s\033[0K"
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if [ $pkt -gt 5000 ]; then
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filename=$dumpdir/dump.`date +"%Y%m%d-%H%M%S"`.cap
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tcpdump -n -s0 -c 2000 > $filename
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echo "`date` Packets dumped, sleeping now."
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sleep 1
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data=`cat $filename`
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sendmail -F $sender -it <<END_MESSAGE
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To: $email
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Subject: $subject
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`cat $filename`
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END_MESSAGE
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echo "sendmail complete"
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sleep 300
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fi
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done |