this post was submitted on 09 Sep 2025
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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.

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Hi all—as title suggests I'm experiencing a compatibility issue between UFW and my vpn (Windscribe if it matters). My UFW defaults are set to deny incoming, allow outgoing, and routed disabled, with no exception rules configured. When I enable Windscribe (I use OpenVPN udp on port 80 if that matters) while UFW is active, Windscribe reports a network configuration error and requests sending debug logs; ignoring the error still allows the VPN to function, but I observe IPv6 and DNS leaks. Disabling UFW removes the error and the leaks. What UFW configuration is causing this behavior, and which specific rules should I add to prevent IPv6 and DNS leaks while keeping UFW enabled?

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