Chrome with Let's Encrypt (Plesk): Old Cyphersuite -


i used plesk extension let's encrypt (https://github.com/plesk/letsencrypt-plesk), chrome shows old cypher suite used. certificate uses:

  • tls 1.2
  • aes_256_cbc
  • hmac-sha1
  • ecdhe_rsa

i found out aes_256_cbc seems problem, ui not allow configuration of these parameters.
there configuration file allows this?
found http://letsencrypt.readthedocs.org/en/latest/using.html#configuration-file not seem support these options

thank you

for server-wide can change:

  • for nginx, ssl_ciphers in /etc/nginx/conf.d/ssl.conf to:

ssl_ciphers eecdh+aesgcm+aes128:eecdh+aesgcm+aes256:edh+aesgcm+aes128:edh+aesgcm+aes256;

  • for apache, sslciphersuite in file /etc/apache2/mods-enabled/ssl.conf:

sslciphersuite eecdh+aesgcm+aes128:eecdh+aesgcm+aes256:edh+aesgcm+aes128:edh+aesgcm+aes256

per individual site can use same strings in additional web server directives apache/nginx: plesk apache/nginx per-site options

additionally plesk has all-in-one tool hardening security options in supported services:

plesk sbin pci_compliance_resolver --enable


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