The protocol requires assistance from a third-party network server (STUN server) located on the opposing (public) side of the NAT, usually the public Internet. Originally, STUN was an acronym for Simple Traversal of User Datagram Protocol (UDP) through Network Address Translators ,  but this title was changed in a specification of an updated
STUN when used by a particular application, will go and initiate a connection with a public STUN server and request to know what address will be used by the STUN server to communicate with the device through its router. UniFi devices use STUN to properly communicate with the UniFi Controller. In this case, the controller acts as the STUN server. I want to test whether someone else's Windows machine can access a public STUN service using UDP and receive a response on its network, which I expect is behind a NAT and firewall. I do not have physical access to this machine, but I know someone who will. The protocol requires assistance from a third-party network server (STUN server) located on the opposing (public) side of the NAT, usually the public Internet. Originally, STUN was an acronym for Simple Traversal of User Datagram Protocol (UDP) through Network Address Translators ,  but this title was changed in a specification of an updated Jul 20, 2017 · STUN server functions are important to many VoIP and other online communications services, but in some cases, STUN is not used. For instance, if a server does not have a firewall in front of it and uses a publicly-registered IP address, then the STUN server function is not needed to connect the call. Typically, a phone that is a client device If you prefer to use a specific STUN server: nat_type, external_ip, external_port = stun.get_ip_info(stun_host='stun.ekiga.net') If you prefer to use a specific STUN server port: nat_type, external_ip, external_port = stun.get_ip_info(stun_port=3478) You may also specify the client interface and port that is used although this is not needed: Google Cloud’s partners can advise and assist you with managing, migrating, optimizing, and modernizing your SQL Server, Windows, and .NET applications. Take the next step Start building on Google Cloud with $300 in free credits and 20+ always free products.
Jun 22, 2020 · STUN (Session Traversal Utilities for NAT, RFC 5389) allows direct communication between VMs behind NAT once a communication channel is established. TURN (Traversal Using Relays around NAT, RFC 5766) permits communication between VMs behind NAT by way of a third server where that server has an external IP address. Each VM connects to the server
STUN servers are used by both clients to determine their IP address as visible by the global Internet, or, at least, by the STUN server itself. For more information, look up what STUN and TURN do. You are able to make calls because IP addresses determined by STUN are part of only some ICE candidates when establishing the connection. Actually, it is a good question, even though it's specific to Google. And a good answer will provide a way to test a STUN server in general. Moreover that STUN server is used in any WebRTC samples, demos, tutorials etc. I think people are too hasty in downvoting questions without REALLY understanding them and knowing what it's about.
Jun 04, 2020 · Ensure the ports of your coturn/stun-server are forwarded/opened and the secret are the same on both sides: the coturn/stun-server and at jits-meet configuration files. Further public and non-google stun-server can be found here. Restart jitsi-meet to enjoy your slef-hosted videoconferencing system:
Sep 18, 2019 · The STUN protocol is defined in RFC 3489. The STUN server is contacted on UDP port 3478, however the server will also ask clients to perform tests on a secondary IP and port number also associated with the server. The RFC states that this port and IP are arbitrary. SingleComm's usage: At SingleComm, we use port 19302, and use Google's STUN servers.