diff --git a/dshield_auto.sh b/dshield_auto.sh
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+#!/bin/bash
+# Written by Onder Vincent Koc
+# @url: https://github.com/koconder/dshield_automatic_iptables
+# @credits: http://wiki.brokenpoet.org/wiki/Get_DShield_Blocklist
+#
+# Dshield Automatic Import to iptables
+# Import Dshield Blocklist in a basic shell script which will run silently via cron
+# and also use a seprate chain file to support other iptables rules without flushing
+# i.e. fail2ban and ddosdeflate
+
+# path to iptables
+IPTABLES="/sbin/iptables";
+
+# list of known spammers
+URL="http://feeds.dshield.org/block.txt";
+
+# save local copy here
+FILE="/tmp/dshield_block.text";
+
+# iptables custom chain
+CHAIN="dshield";
+
+# check to see if the chain already exists
+$IPTABLES -L $CHAIN -n
+
+# check to see if the chain already exists
+if [ $? -eq 0 ]; then
+
+    # flush the old rules
+    $IPTABLES -F $CHAIN
+
+    echo "Flushed old rules. Applying updated dsheild list...."    
+
+else
+
+    # create a new chain set
+    $IPTABLES -N $CHAIN
+
+    # tie chain to input rules so it runs
+    $IPTABLES -A INPUT -j $CHAIN
+
+    # don't allow this traffic through
+    $IPTABLES -A FORWARD -j $CHAIN
+
+    echo "Chain not detected. Creating new chain and adding dsheild list...."
+
+fi;
+
+# get a copy of the spam list
+wget -qc $URL -O $FILE
+
+blocklist=$( cat $FILE | awk '/^[0-9]/' | awk '{print $1"/"$3}'| sort -n)
+for IP in $blocklist
+do
+    # add the ip address log rule to the chain
+    $IPTABLES -A $CHAIN -p 0 -s $IP -j LOG --log-prefix "[dsheild BLOCK]" -m limit --limit 3/min --limit-burst 10
+
+    # add the ip address to the chain
+    $IPTABLES -A $CHAIN -p 0 -s $IP -j DROP
+
+    echo $IP
+done
+
+echo "Done!"
+
+# remove the spam list
+unlink $FILE