On Sep 30, 2021, at 10:29 AM, Adrian Smith via Freeradius-Users <freeradius-users at lists.freeradius.org> wrote: > What's the highest version of openssl I can use when building FreeRadius? OpenSSL 3.0.0 was just released. But the APIs changed, so I don't recommend that. Anything in the OpenSSL 1.1.x stream is fine. Alan DeKok.