From 85dc113fe43577cb3b8e42ad83475f1dd351950b Mon Sep 17 00:00:00 2001
From: Karim <37943746+ksaadDE@users.noreply.github.com>
Date: Wed, 18 May 2022 01:22:45 +0200
Subject: [PATCH] Replaceing old TLS versions and insecure ciphers

NEVER use SSL / TLS in outdated versions or insecure / oudated ciphers. Current state-of-the-art TLS Versions are TLSv1.2 and TLSv1.3. TLSv1.2 is only enabled for backwards compatibility. Ciphers are taken out of the guide.

```ssl_ciphers ECDHE-RSA-AES256-GCM-SHA512:DHE-RSA-AES256-GCM-SHA512:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-SHA384;```

Are the recommended ciphers out of  source 4 in combination of all other sources.

source 1: https://www.linuxtechi.com/harden-secure-nginx-web-server-linux
source 2: https://beaglesecurity.com/blog/article/nginx-server-security.html
source 3: https://www.acunetix.com/blog/articles/tls-ssl-cipher-hardening/
source 4: https://raymii.org/s/tutorials/Strong_SSL_Security_On_nginx.html
---
 modoboa_installer/scripts/files/nginx/modoboa.conf.tpl | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/modoboa_installer/scripts/files/nginx/modoboa.conf.tpl b/modoboa_installer/scripts/files/nginx/modoboa.conf.tpl
index a281371..e2b3d78 100644
--- a/modoboa_installer/scripts/files/nginx/modoboa.conf.tpl
+++ b/modoboa_installer/scripts/files/nginx/modoboa.conf.tpl
@@ -17,8 +17,8 @@ server {
 
     ssl_certificate %tls_cert_file;
     ssl_certificate_key %tls_key_file;
-    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
-    ssl_ciphers "EECDH+AESGCM:EDH+AESGCM:ECDHE-RSA-AES128-GCM-SHA256:AES256+EECDH:DHE-RSA-AES128-GCM-SHA256:AES256+EDH:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA:ECDHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES128-SHA256:DHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES256-GCM-SHA384:AES128-GCM-SHA256:AES256-SHA256:AES128-SHA256:AES256-SHA:AES128-SHA:DES-CBC3-SHA:HIGH:!aNULL:!eNULL:!EXPORT:!DES:!MD5:!PSK:!RC4";
+    ssl_protocols TLSv1.2 TLSv1.3;
+    ssl_ciphers "ECDHE-RSA-AES256-GCM-SHA512:DHE-RSA-AES256-GCM-SHA512:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-SHA384";
     ssl_prefer_server_ciphers on;
     ssl_session_cache shared:SSL:10m;
     ssl_verify_depth 3;