There must be a way to open ports on your modem (that is NAT forwarding). If no port is open, there is no way to gain access to your server. If a port is open, then there might be a way for an intruder to get into your network. The reality is a bit more complex (man in the middle, ...) but it would make sense only if your data is of value or if someone means you harm.
There must be a way to open ports on your modem (that is NAT forwarding). If no port is open, there is no way to gain access to your server. If a port is open, then there might be a way for an intruder to get into your network. The reality is a bit more complex (man in the middle, ...) but it would make sense only if your data is of value or if someone means you harm.