Turn server

[chrisooo3]

Hi @samyk
Have you been thinking about using a turn server to establish a connection between two machines behind NAT?
If not could you explain why?

[samyk]

Hi @chrisooo3, do you mean behind the same NAT? If they were behind the same NAT, they could just talk directly. If you mean behind two separate NATs, then yes, that's what TURN is designed for but I'm not sure how you're suggesting it be applied here. Will you provide more context?

[chrisooo3]

@samyk I mean behind two separate NATs.

I would like to use stun to connect to device which is outside of my network.

[samyk]

STUN and TURN will allow you to do that, though I don't think the slipstream technique is relevant. You may also be interested in other P2P technologies like https://samy.pl/pwnat/ which I hope to be releasing a modernized version of soon around a new technique. The benefit there is no dependence on a 3rd party server (such as a TURN or STUN server), however it will have much lower reliability than purpose-built relay protocols like TURN.

[chrisooo3]

@samyk I have already running server in LAN behind the nat. So it is not reachable from outside.

How can I use stun server to obtain the public ip address of this web server, which is behind router and nat?