iptables.maps.google.sh

#!/bin/bash
 
# Check new IPv4 addresses

# If address is not in iptables add rule 
IPLISTV4=$(host maps.googleapis.com | grep -E 'has address' | awk '{print $4}')
for x in $IPLISTV4
do
        $(iptables -L -nv | grep "$x" >> /dev/null)
        if [[ "$?" -ne '0' ]]; then
                $(iptables -I OUTPUT  -p tcp -m tcp -d "$x" -m state --state NEW -j ACCEPT)
        fi
done
 
# Check new IPv6 addresses
# If address is not in iptables add rule 
IPLISTV6=$(host maps.googleapis.com | grep -E 'has IPv6 address' | awk '{print $5}')
for x in $IPLISTV6
do
        $(iptables -L -nv | grep "$x" >> /dev/null)
        if [[ "$?" -ne '0' ]]; then
                $(iptables -I OUTPUT  -p tcp -m tcp -d "$x" -m state --state NEW -j ACCEPT)
        fi
done