croc

croc is a tool that allows any two computers to simply and securely transfer files and folders.

Server

$ CROC_PASS=hackme croc relay
[info]	2023/02/23 10:29:50 starting croc relay version v9.6.0-0e93f1e
[info]	2023/02/23 10:29:50 starting TCP server on :9009
[info]	2023/02/23 10:29:50 starting TCP server on :9010
[info]	2023/02/23 10:29:50 starting TCP server on :9011
[info]	2023/02/23 10:29:50 starting TCP server on :9012
[info]	2023/02/23 10:29:50 starting TCP server on :9013

Client A (sender)

$ export CROC_RELAY=1.2.3.4:9009
$ export CROC_PASS=hackme

$ seq 10 > test.txt

$ croc send test.txt
Sending 'test.txt' (21 B)
Code is: 1234-what-the-hack

Client B (receiver)

$ export CROC_RELAY=1.2.3.4:9009
$ export CROC_PASS=hackme

$ croc 1234-what-the-hack
Accept 'test.txt' (21 B)? (Y/n)