If this should be posted in networking stack overflow please let me know, and sorry if this is not the correct place. I'll delete the question if it's inappropriate.
I have a desktop (windows/linux) that I need to be able to access from my macbook. It is directly connected to my router via ethernet. What information do I need to connect from outside the network? From within my own network I can connect using 10.0.1.9 as the IP address. How do I specify which device on my network I should be connecting to- as using just the public IP address is not enough. Is it a port or is there a gateway I have to configure?