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RustDesk: I Found This Open-Source TeamViewer Alternative Impressive!
(news.itsfoss.com)
From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
Community icon by Alpár-Etele Méder, licensed under CC BY 3.0
The server is used for hole punching, to open up a P2P connection thorugh NATs and Firewalls. If it doesn't work the server also relays the traffic between the clients.
Getting an end to end connection through todays internet is unfortunately not easy for an average user.