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– Published alongside the ISO on the download page:
Includes an updated version of OpenSSL (1.1.1) to address multiple CVEs. Pfsense 2.5.1 Download Iso
Always verify the integrity of files from non-official mirrors using the SHA256 checksums provided in official documentation or reliable community repositories. Key Features of pfSense 2.5.1 – Published alongside the ISO on the download
If you are looking for the classic "Community Edition" feel that 2.5.1 represented, you should instead download (or the current stable CE version). Pfsense 2.5.1 Download Iso
Since the Official pfSense Download Page now serves newer versions like 2.7.x or 2.8.x, you can find 2.5.1 through these community-maintained archives:
