Gonc – Netcat with P2P Nat Traversal (github.com)

Would this work in china > outside (and vice versa)

Here’s a regularly updated list of them [0].

0 - https://github.com/pradt2/always-online-stun/tree/master

yes.

https://github.com/threatexpert/gonc/blob/21c02056033b6fdb64...