100 %. Firewalls basically do nothing. If you are running vulnerable software, it won't help. If not, it's not helping, either. It basically only helps in the r

100 %. Firewalls basically do nothing. If you are running vulnerable software, it won't help. If not, it's not helping, either. It basically only helps in the rare case that you have spectacularly misconfigured something. On the other hand, if a firewall is blocking automatic software updates, it's actually dramatically lessening security.