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