zlacker

I'm not sure what you mean, what sounds dangerous to me is not caring about what services are listening to on a server.

The firewall is there as a safeguard in case a service is temporarily misconfigured, it should certainly not be the only thing standing between your services and the internet.

>>seszet+(OP)
A firewall is a safeguard, period. Like the firewall between the driver and engine in a car.