cat > /home/scan_arp.sh <<\EOGTR#!/bin/bash
#########################################################################
#                          Script for scan ARP                          #
#                          Created by PM-DoIT                           #
#                                ver 0.5                                #
#########################################################################

#------------------------------- VARIABLE ------------------------------#
PORT="22"
NIC=$(ip link | grep -v "lo:" | grep UP | awk '{print $2}' | sed 's/://g' | head -1)
TEMP="/var/tmp/scan"
LOG="/var/tmp/scan.log"

#----------------------------- MAC-UPDATE ------------------------------#
amac(){
echo -e "- \e[1;32mMAC\e[0m Update"
/usr/sbin/get-oui -v > /dev/null 2>&1
}

#------------------------------ ARP-SCAN -------------------------------#
ascan(){
echo -e "- \e[1;32mARP\e[0m Scan LAN over [\e[1;33m$NIC\e[0m]"
rm -rf /var/tmp/scan*
arp-scan --retry=2 --ignoredups -I $NIC --localnet | sort -V >> $TEMP
}

#----------------------------- CHECK-PORT ------------------------------#
aport(){
echo -e "- \e[1;32mCheck\e[0m open port [\e[1;33m$PORT\e[0m]"
LST=$(cat $TEMP | awk '{print $1}' | grep "^[0-9][0-9].")
echo "-------------- ------------- ----------------- ---------- --------" > $LOG
echo "IP-ADDRESS HOSTNAME MAC-ADDRESS VENDOR PORT[$PORT]" >> $LOG
echo "-------------- ------------- ----------------- ---------- --------" >> $LOG
for i in $LST;
do
timeout 1 nc -z -v $i $PORT > /var/tmp/scan.txt 2>&1
HOST=$(cat /etc/hosts | grep -w "$i" | awk '{print $2}' | head -1)
if [ -z $HOST ]; then HOST="!MISSING!"; fi
VEND=$(cat $TEMP | grep -w "$i" | awk '{print $3"_"$4}')
MAC=$(cat $TEMP | grep -w "$i" | awk '{print $2}')
STA=$(cat /var/tmp/scan.txt | egrep "open|refused|closed|succeeded" | awk '{print $NF}')
echo "$i $HOST $MAC $VEND $STA" >> $LOG
done
echo "-------------- ------------- ----------------- ---------- --------" >> $LOG
sed -i 's/(tcp)//g' $LOG
}

#------------------------------- CORE ----------------------------------#
clear
amac
ascan
aport
echo -e "- \e[1;32mReport\e[0m generated [\e[1;34m/var/tmp/scan.log\e[0m]"
cat $LOG | column -t