VPN Kill Switch For Mac OS | Terminal User Interface | Requires killswitch.pf.conf

killswitch.pf.command

#! /bin/bash

echo off

defgw=$(route get 0.0.0.0 2>/dev/null | awk '/gateway: / {print $2}';)
def_int=$(route get 0.0.0.0 2>/dev/null | awk '/interface: / {print $2}';)

clear
:start
clear

echo Simple VPN KillSwitch, ver. 1.2 - by whoami
echo
echo Your default gateway is "$defgw" on interface "$def_int"
echo
echo USAGE: 
echo
PS3='Please enter your choice: '
options=("Enable Kill Switch (IP "$defgw")" "Disable Kill Switch (IP "$defgw")" "Exit Kill Switch")
select opt in "${options[@]}"
do
    case $opt in
    "Enable Kill Switch (IP "$defgw")")
            sudo pfctl -Fa -f ~/Documents/killswitch.pf.conf -e
            echo Kill Switch Enabled...
sleep 1
;;
    "Disable Kill Switch (IP "$defgw")")
            sudo sudo pfctl -Fa -f /etc/pf.conf -e
            echo Kill Switch Disabled... 
sleep 1       
;;
    "Exit Kill Switch")                
             break
            ;;
        *) echo "invalid option $REPLY";;
    esac
done