alt Hacker NewsYou just send a (UDP) packet to the other side's address and port and they send one to yours. The firewalls treat it as an outbound connection on both sides.
Replies
GoblinSlayer • 08/01/2025
You just need to tell the other side that you want to connect.
I don't believe that's true. You would still need something like UDP hole punching to bootstrap the inbound flow on both sides first. Also you would still only be limited to UDP traffic, TCP would still be blocked.