For example, postulate a DNS entry of myTopSecrets mapped to localhost. If you use it, it will be routed to your own computer. If someone else uses it, they would be routed to their own computer. The same follows for IP addresses within your local area network.
Unless you did extra work outside the scope of DNS, nothing in your lan is addressable from outside your lan.
For example, postulate a DNS entry of myTopSecrets mapped to localhost. If you use it, it will be routed to your own computer. If someone else uses it, they would be routed to their own computer. The same follows for IP addresses within your local area network.
Unless you did extra work outside the scope of DNS, nothing in your lan is addressable from outside your lan.