Permalink
Switch branches/tags
Nothing to show
Find file Copy path
Fetching contributors…
Cannot retrieve contributors at this time
executable file 61 lines (49 sloc) 1.16 KB
#!/bin/bash
# Marc Levine
#
if [ $# -eq 1 ]; then
IPRange=$1
echo -n "Please enter your log file name: "
read logfile
elif [ $# -eq 2 ]; then
IPRange=$1
logfile=$2
else
echo "Please enter the IP range in slash notation ex:10.0.0.0/24"
echo -n "CIDR Notation: " #the echo -n will write without a newline
read IPRange
echo -n "Please enter your log file name: "
read logfile
fi
echo "Please sit back and relalx while this script runs"
function randDNS {
case $1 in
1)
dns="8.8.8.8"
;;
2)
dns="8.8.4.4"
;;
3)
dns="209.244.0.4"
;;
4)
dns="209.244.0.3"
;;
esac
}
#check hosts to see if they are live using nmap
ipString=`nmap $IPRange -n -sP | grep report | awk '{print $5}'`
read -a ipArray <<<$ipString
for ipHost in "${ipArray[@]}"
do
echo "Checking IP Address:" $ipHost
#generate random number to change dns server
rand=`echo $RANDOM % 4 + 1 | bc`
randDNS $rand
#echo dig @$dns +short -x $ipHost
hostName=`dig @$dns +short -x $ipHost`
unset -v dns
#output to file
echo "$ipHost,$hostName" >> "$logfile"
done