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⇱ Samba 4.23 Released With SMB3 Over QUIC, SMB3 Unix Extensions By Default - Phoronix


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Samba 4.23 Released With SMB3 Over QUIC, SMB3 Unix Extensions By Default

Written by Michael Larabel in Free Software on 12 September 2025 at 06:27 AM EDT. 17 Comments
Samba 4.23 is out today as the newest version of this SMB protocol re-implementation for file and print services interoperability with the Microsoft Windows world.

Samba 4.23 now enables the SMB3 Unix Extensions by default. These extensions provide "first-class" support for POSIX semantics over SMB3 for proper POSIX permissions and the like with Unix/Linux clients as well as allowing symlinks, hardlinks, and more. Windows clients not supporting these extensions will still behave normally.

Another big change with Samba 4.23 is supporting SMB3 over QUIC. The QUIC transport layer network protocol is now a supported transport for SMB3.

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Samba 4.23 also updates its write time handling behavior to match modern Microsoft Windows servers and provides Prometheus endpoint support for exporting Samba server metrics in a Prometheus compatible format for better integration with Prometheus and Grafana. There are also per-share profiling stats now available too with Samba 4.23.

Samba 4.23 downloads and more details on today's feature release via Samba.org.

Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via MichaelLarabel.com.