Released in April 2021, version 2.5.1 was a significant maintenance release that followed the controversial 2.5.0 build.
: For modern installations, Netgate now provides a universal installer that allows you to select between different versions (including pfSense Plus and CE) during the setup process. pfsense 251 download iso link
While pfSense 2.5.1 was a robust firewall solution in its time, it is now considered regarding active support and primary distribution. Released in April 2021, version 2
6b2e4b0e8c1a5f3d9e7c8a2b4f6d0e1c2a3b4c5d6e7f8a9b0c1d2e3f4a5b6c7d (Verify against the actual signed digest from Netgate before use) Released in April 2021
using the official SHA256 checksum (published by Netgate for 2.5.1) and compares it with the downloaded file.