Why do programs like TeamViever or MsTeams work through NAT or without dedicated IP, but programs like games with direct online p2p functionality don’t?

Question

I understand that programs like MS Teams have their own severs with dedicated IPs that are used as “relays” to get around NAT restrictions. However, some programs like RADMIN manage to work p2p through NAT without needing a server . How does it all work?

In: 20

Answer 1

There are thee terms that you should learn about first to clear things up. STUN, TURN and ICE.

[https://en.wikipedia.org/wiki/STUN](https://en.wikipedia.org/wiki/STUN) [https://en.wikipedia.org/wiki/Traversal_Using_Relays_around_NAT](https://en.wikipedia.org/wiki/Traversal_Using_Relays_around_NAT) [https://en.wikipedia.org/wiki/Interactive_Connectivity_Establishment](https://en.wikipedia.org/wiki/Interactive_Connectivity_Establishment)