This project implements a simple STUN server and client on Windows, Linux, and Solaris. The STUN protocol (Simple Traversal of UDP through NATs) is described in the IETF RFC 3489, available at

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User Reviews

  • I have compiled all these 3 MFC dialog(winstun), and server, client exes...but unable to understand winstun usage..! server client kept on same machine...gave parameter as server: server -v -h MyLocalIP -a MyLocalIP -p 3478 -o 3479 -m 6439..(Since I am having one NIC) client:client MyLocalIP -v -p 3478 -i MyLocalIP.. But could not understand use of MFC dialog(winstun).. Can anybody explain me..? -Pankaj

  • Really nice and simple solution but it needs a Windows Service option. I know it's planned.

    1 user found this review helpful.
  • There are *.pem files which are private keys/certificate int the compact file. I have got no idea why? does stun have got anything to do with PKI / support TLS?

  • Hi all, tell me please. I have two client A and B. Thay connected to stund server (they know IP address and port toghether). How Client A send message to client B directly? Thanks so much.

  • Easy to use and works.

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Additional Project Details

Intended Audience

Telecommunications Industry, System Administrators, Developers

User Interface

Non-interactive (Daemon)

Programming Language