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scripts/iptables_Roy.sh
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209
scripts/iptables_Roy.sh
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#!/bin/bash
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echo -e "****************Welcome*************"
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###############################IPTABLE SERVICES PROGRAM BEGINS HERE###############################
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checkstatus()
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{
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opt_checkstatus=1
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while [ $opt_checkstatus != 7 ]
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do
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clear
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#echo -e "\nChoose the Option Bellow!!!\n
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echo -e "\n\t*****Note: Save your Iptables before stop/Restart the iptables Services*****\n"
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echo -e " 1. Save the iptables\n
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2. Status of Iptables\n
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3. Start iptables Services\n
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4. Stop iptables Services\n
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5. Restart iptable Services\n
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6. Flush iptables (**Use Carefully_it will remove all the rules from iptables**)\n
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7. Go back to Main Menu"
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read opt_checkstatus
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case $opt_checkstatus in
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1) echo -e "*******************************************************\n"
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/etc/init.d/iptables save
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echo -e "\n*******************************************************\n"
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echo -e "Press Enter key to Continue..."
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read temp;;
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2) echo -e "*******************************************************\n"
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/etc/init.d/iptables status
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echo -e "*******************************************************"
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echo -e "Press Enter key to Continue..."
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read temp;;
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3) echo -e "*******************************************************\n"
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/etc/init.d/iptables start
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echo -e "*******************************************************\n"
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echo -e "Press Enter key to Continue..."
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read temp;;
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4) echo -e "*******************************************************\n"
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/etc/init.d/iptables stop
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echo -e "*******************************************************\n"
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echo -e "Press Enter key to Continue..."
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read temp;;
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5) echo -e "*******************************************************\n"
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/etc/init.d/iptables restart
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echo -e "*******************************************************\n"
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echo -e "Press Enter key to Continue..."
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read temp;;
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6) iptables -F
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echo -e "*******************************************************"
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echo -e "All the Rules from the Iptables are Flushed!!!"
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echo -e "*******************************************************\n"
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echo -e "Press Enter key to Continue..."
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read temp;;
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7) main;;
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*) echo -e "Wrong Option Selected!!!"
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esac
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done
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}
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###############################BUILD FIREWALL PROGRAM BEGINS FROM HERE###############################
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buildfirewall()
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{
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###############Getting the Chain############
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echo -e "Using Which Chain of Filter Table?\n
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1. INPUT
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2. OUTPUT
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3. Forward"
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read opt_ch
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case $opt_ch in
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1) chain="INPUT" ;;
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2) chain="OUTPUT" ;;
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3) chain="FORWARD" ;;
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*) echo -e "Wrong Option Selected!!!"
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esac
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#########Getting Source IP Address##########
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#Label
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echo -e "
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1. Firewall using Single Source IP\n
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2. Firewall using Source Subnet\n
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3. Firewall using for All Source Networks\n
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4. Firewall choose a source file contationing ip addesses"
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read opt_ip
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case $opt_ip in
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1) echo -e "\nPlease Enter the IP Address of the Source"
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read ip_source ;;
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2) echo -e "\nPlease Enter the Source Subnet (e.g 192.168.10.0/24)"
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read ip_source ;;
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3) ip_source="0/0" ;;
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4) echo -e "\nPlease Enter the file name."
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read ip_source ;;
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#5) ip_source = "NULL" ;;
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*) echo -e "Wrong Option Selected"
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esac
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#########Getting Destination IP Address##########
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echo -e "
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1. Firewall using Single Destination IP\n
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2. Firewall using Destination Subnet\n
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3. Firewall using for All Destination Networks\n
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4. Firewall using a file"
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read opt_ip
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case $opt_ip in
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1) echo -e "\nPlease Enter the IP Address of the Destination"
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read ip_dest ;;
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2) echo -e "\nPlease Enter the Destination Subnet (e.g 192.168.10.0/24)"
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read ip_dest ;;
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3) ip_dest="0/0" ;;
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4) echo -e "\nPlease Enter the file name."
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read ip_dest ;;
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#5) ip_dest = "NULL" ;;
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*) echo -e "Wrong Option Selected"
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esac
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###############Getting the Protocol#############
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echo -e "
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1. All Traffic of TCP
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2. Specific TCP Service
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3. Specific Port
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4. Using no Protocol"
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read proto_ch
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case $proto_ch in
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1) proto=TCP ;;
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2) echo -e "Enter the TCP Service Name: (CAPITAL LETTERS!!!)"
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read proto ;;
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3) echo -e "Enter the Port Name: (CAPITAL LETTERS!!!)"
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read proto ;;
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4) proto="NULL" ;;
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*) echo -e "Wrong option Selected!!!"
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esac
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#############What to do With Rule#############
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echo -e "What to do with Rule?
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1. Accept the Packet
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2. Reject the Packet
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3. Drop the Packet
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4. Create Log"
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read rule_ch
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case $rule_ch in
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1) rule="ACCEPT" ;;
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2) rule="REJECT" ;;
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3) rule="DROP" ;;
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4) rule="LOG" ;;
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esac
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###################Generating the Rule####################
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echo -e "\n\tPress Enter key to Generate the Complete Rule!!!"
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read temp
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echo -e "The Generated Rule is \n"
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if [ $proto == "NULL" ]; then
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echo -e "\niptables -A $chain -s $ip_source -d $ip_dest -j $rule\n"
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gen=1
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else
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echo -e "\niptables -A $chain -s $ip_source -d $ip_dest -p $proto -j $rule\n"
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gen=2
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fi
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echo -e "\n\tDo you want to Enter the Above rule to the IPTABLES? Yes=1 , No=2"
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read yesno
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if [ $yesno == 1 ] && [ $gen == 1 ]; then
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iptables -A $chain -s $ip_source -d $ip_dest -j $rule
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else if [ $yesno == 1 ] && [ $gen == 2 ]; then
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iptables -A $chain -s $ip_source -d $ip_dest -p $proto -j $rule
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else if [ $yesno == 1 ] && [$gen == 2]; then
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iptables -A $chain -s $(grep -hvE "^#|^$" $ip_source) -d $(grep -hvE "^#|^$" $ip_dest) -p $proto -j $rule
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else if [ $yesno == 3 ]; then
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main
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fi
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fi
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fi
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fi
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}
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main()
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{
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ROOT_UID=0
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if [ $UID == $ROOT_UID ];
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then
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clear
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opt_main=1
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while [ $opt_main != 4 ]
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do
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echo -e "/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\n"
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#############Check Whether the iptables installed or not############
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echo -e "\t*****Main Menu*****\n
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1. Check Iptables Package\n
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2. Iptables Services\n
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3. Build Your Firewall with Iptables\n
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4. Exit"
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read opt_main
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case $opt_main in
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1) echo -e "******************************"
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rpm -q iptables
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echo -e "******************************" ;;
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2) checkstatus ;;
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3) buildfirewall ;;
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4) exit 0 ;;
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*) echo -e "Wrong option Selected!!!"
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esac
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done
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else
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echo -e "You Must be the ROOT to Perfom this Task!!!"
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fi
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}
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main
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exit 0
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