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I was propably not specific enough here: the above Cipher configuration are all TLS1.2 ciphers, still plesk leaves
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
as default when switching to HTTP2, suggesting v1.0 and 1.1 would still work - which they don't because there aren't any ciphers they support...
I just had the same issue with Plesk 12.5.30 #28 and my permissions on
/usr/local/psa/admin/sbin/mod_wrapper were wrong:
---x--x--- 1 root psaadm 23K 10. Apr 13:08 /usr/local/psa/admin/sbin/mod_wrapper
chmod 4510 /usr/local/psa/admin/sbin/mod_wrapper
and now they are
-r-s--x--- 1 root psaadm...
I would like to note that enabling HTTP/2 sets the following ciphers in /etc/nginx/conf.d/ssl.conf :
ssl_ciphers EECDH+AESGCM+AES128:EECDH+AESGCM+AES256:EECDH+CHACHA20:EDH+AESGCM+AES128:EDH+AESGCM+AES256:EDH+CHACHA20;
Testing my server afterwards with SSLLabs showed that this configuration...