#!/bin/bash

# eth0 lancard disable

echo -e "\n 1. eth0 Lan disable ... "

ifdown eth0

echo -e " 2. syn_recv test ... "

echo -e "\n    netstat -anp | grep -i syn_recv "

STR1=`netstat -anp | grep -i syn_recv`

if [ "$STR1" == "" ]

then

echo -e "    result :: syn_recv is not exist! \n"

else 

        while [ "$STR1" != ""  ]

        do

                echo -e "\nnetstat -anp | grep -i syn_recv \n"

                STR1=`netstat -anp | grep -i syn_recv`

                sleep 1

                if [ "$STR1" == "" ]

                then

                        echo -e "ending :: syn_recv is not exist! \n"

                else

                        echo -e "$STR1 \n"

                fi

        done

fi

# eth0 Lancard enable

echo -e " 3. eth0 Lan enable ... "

echo -e "    waiting 30 second..."

sleep 30

echo -e "    waiting 30 second..."

sleep 30

echo -e "    waiting 30 second..."

sleep 30

echo -e "\n"

ifup eth0

echo -e "--------------------------------------- \n"

#service network restart

ping 168.126.63.1 -c 2

netstat -anp | grep -i syn_recv 

echo -e "\n\n.\n.\n.\n.\n.\n.\n.\n.\n.\n.\n"

./syn_loop_check.sh 5