Script to add IPs from https://www.badips.com/ to iptables. It has an associated spinner function for user feedback. Be sure to mind / update your Paths as necessary.

badips.sh

#!/opt/bin/bash
# Script for blocking IPs which have been reported to www.badips.com
# Usage: Just execute by e.g. cron every day
# ---------------------------
 
_ipt=/sbin/iptables    # Location of iptables (might be correct)
_input=badips.db       # Name of database (will be downloaded with this name)
_pub_if=eth0           # Device which is connected to the internet (ex. $ifconfig for that)
_droplist=badip-droplist     # Name of chain in iptables (Only change this if you have already a chain with this name)
_level=4               # Blog level: not so bad/false report (0) over confirmed bad (3) to quite aggressive (5) (see www.badips.com for that)
_service=any           # Logged service (see www.badips.com for that)

# SPINNER
logfile=/tmp/mylog

echo >$logfile
trap "rm -f $logfile" EXIT

# Output message to log file.
function log_msg()
{
    echo "$*" >>$logfile
}
# SPINNER

# Start spinner
bash /root/scripts/bashSpinner/spinner2.sh &
log_msg "Downloading IP List . . ."
cd /tmp
# Get the bad IPs
wget -qO- http://www.badips.com/get/list/${_service}/$_level > $_input || { echo "$0: Unable to download ip list."; exit 1; }

### Setup our black list ###
log_msg "Unlink existing chain . . ."
# Finally, insert or append our black list
$_ipt -D DEFAULT_INPUT -j $_droplist
#$_ipt -D DEFAULT_OUTPUT -j $_droplist
#$_ipt -D DEFAULT_FORWARD -j $_droplist

# First flush the droplist, then delete it.
log_msg "Flushing $_droplist . . ."
$_ipt -F $_droplist
log_msg "Deleting $_droplist . . ."
$_ipt -X $_droplist
log_msg "(Re)Creating $_droplist . . ."
$_ipt -N $_droplist
 
# Filter out comments and blank lines
# store each ip in $ip
# Get number of entries for feedback percentage
tLen=`cat $_input | wc -l`
i=0
pct=0
for ip in `cat $_input`
do
	let i+=1
	let pct=$((100*$i/$tLen))
	# Append everything to $_droplist
	$_ipt -A $_droplist -i ${_pub_if} -s $ip -j DROP
	log_msg "Appending IPs ... $pct% complete"
done

log_msg "Linking chain . . ."

# Finally, link our black list
$_ipt -I INPUT -j $_droplist
#$_ipt -I OUTPUT -j $_droplist
#$_ipt -I FORWARD -j $_droplist

#log_msg "Finished - Sleeping for 10 seconds . . ."

#sleep 10
#echo

exit 0

spinner2.sh

#!/opt/bin/bash

logfile=/tmp/mylog
logsize=0
spinpause=0.10
linelen=0

# Output last line from log file.
function lastout()
{
    local line=$(tail -n 1 $logfile 2>/dev/null)
    if [[ "$line" ]]; then
        echo -n "     $line"

        # Erase any extra from last line.
        local len
        let len=$linelen-${#line}
        while [[ $len -gt 0 ]]
        do
            echo -n " "
            let len--
        done
        linelen=${#line}
    fi
}

# Output a spin character.
function spinout()
{
    local spinchar="$1"
    local sz
    local ll
    if [[ -f $logfile ]]; then
        echo -n -e "\r$spinchar"
        sleep $spinpause

        # Check for new message.
        sz=$(stat --printf '%s' $logfile 2>/dev/null)
        if [[ $sz -gt $logsize ]]; then
            lastout
            logsize=$sz
        fi
    fi
}

if [[ -f $logfile ]]; then
    logsize=$(stat --printf '%s' $logfile 2>/dev/null)
    if [[ $logsize -gt 0 ]]; then
        echo -n " "
        lastout
    fi

    while [[ -f $logfile ]]
    do
        spinout "/"
        spinout "-"
        spinout "\\"
        spinout "|"
        spinout "/"
        spinout "-"
        spinout "\\"
        spinout "|"
    done
    echo
fi