Proxy traffic from outside to Localhost?

Question

*nix-like systems

A certain process (Jupyter notebook) is running on a MacOS computer, listening on a port at localhost:8888.
I am connecting via vpn.
Is it possible to quickly proxy using the same nc to an external ip as if I am making a request locally?

Tried something like this:

mkfifo /tmp/fifo
nc -lkv 8888  </tmp/fifo | nc localhost 8888 >/tmp/fifo

does not work. Forbidden error - the process sees that the request is being made from outside.

Answer 1

socat tcp-l:8088,fork,reuseaddr tcp:127.0.0.1:8888
Checked - it works, only the external port number needs to be set differently - otherwise it will be displayed that the address is already in use, even if port 8888 is open only on localhost.