P2P server connection using Raspberry Pi

Question

Here's the thing:
You have a Rpi(Short for Raspberry) in your room. Your friend Jack lives in another city. You two work on projects and need to share files. Your friend bought a Rpi for something but its useless now. You plan to connect two of these Rpis so that you can send or receive files(Security aside). How do you connect them?
I know not much about networking but If you do you can answer it. Just summery or blog post link would be fine.

Answer 1

there are cool documentation
regarding this on their website

https://www.raspberrypi.org/documentation/remote-access/ssh/

Answer 2

You can enable ssh from Raspberry Pi Configuration.
Then you can connect to the raspberry using
ssh pi@85.23.123.123
ssh user@ip_address

Or copy file
scp /home/file.txt pi@85.23.122.122:/home

Answer 3

I dont know much about RP, but you might also need to set up the public private keys for your ssh connection prior to getting started.

coz its needed for initial connection of 2 normal devices on secure shell.

Answer 4

ssh. You just need to enable it.

Answer 5

You wanna say something?

Answer 6

I am here, whenever you have time just post in this thread.

Answer 7

Can you explain a bit more?

Answer 8

How to get hacked 101

Answer 9

N00B ?

Answer 10

Akib Reza Yes, I'm here.

Answer 11

Akib Reza Yes, why are you guys not just using TLS?

Answer 12

I don't know much about TLS. Can you tell me? I just read an article on wikipedia about it. Don't know how its implemented.