And you are right, it is RHEL 7.9 NAME="Red Hat Enterprise Linux Server" VERSION="7.9 (Maipo)" ID="rhel" ID_LIKE="fedora" Below is our openssl version OpenSSL 1.0.2k-fips 26 Jan 2017 Posted at Nginx Forum: https://forum.nginx.org/read.php?2,293852,293855#msg-293855