-- For encrypted oper and (optional) server passwords, a working DES, MD5, or SHA library.
+- For encrypted oper and (optional) server passwords, a working DES, MD5, or SHA library
+ implementing crypt().
+
+- For ECDHE, OpenSSL 1.0.0 or newer is required. RHEL/Fedora and derivatives like CentOS
+ will need to compile OpenSSL from source, as ECC/ECDHE-functionality is removed from
+ the OpenSSL package in these distributions.