Reset iptables / ip6tables

reset_iptables.sh

#!/bin/bash

set -e

if [ "$(id -u)" != '0' ]; then
  SUDO=sudo
fi

policies=(
  'INPUT'
  'OUTPUT'
  'FORWARD'
)

options=(
  '-Z'
  '-F'
  '-X'
)

for policy in "${policies[@]}"; do
  ${SUDO} iptables -P "$policy" ACCEPT
  ${SUDO} ip6tables -P "$policy" ACCEPT
done

for option in "${options[@]}"; do
  ${SUDO} iptables "$option"
  ${SUDO} ip6tables "$option"
done