Update Bitwarden Nginx configuration for modern SSL, simplified proxy setup, and enhanced compatibility; backup old config.

sites-available/bitwarden

@@ -1,68 +1,50 @@
-# The `upstream` directives ensure that you have a http/1.1 connection
+# generated 2024-06-16, Mozilla Guideline v5.7, nginx 1.18.0, OpenSSL 3.0.2, modern configuration
-# This enables the keepalive option and better performance
+# https://ssl-config.mozilla.org/#server=nginx&version=1.18.0&config=modern&openssl=3.0.2&guideline=5.7
-#
-# Define the server IP and ports here.
-upstream vaultwarden-default {
-  zone vaultwarden-default 64k;
-  server router.tradewind.vip:10060;
-  keepalive 2;
-}
-
-# Needed to support websocket connections
-# See: https://nginx.org/en/docs/http/websocket.html
-# Instead of "close" as stated in the above link we send an empty value.
-# Else all keepalive connections will not work.
-map $http_upgrade $connection_upgrade {
-    default upgrade;
-    ''      "";
-}
-
-# Redirect HTTP to HTTPS
 server {
     listen 80;
     listen [::]:80;
+
     server_name  bitwarden.tradewind.vip;
 
+    location / {
         return 301 https://$host$request_uri;
     }
+}
 
 server {
-    # For older versions of nginx appended http2 to the listen line after ssl and remove `http2 on`
+    listen 443 ssl http2;
-    listen 443 ssl;
+    listen [::]:443 ssl http2;
-    listen [::]:443 ssl;
+
-#    http2 on;
     server_name  bitwarden.tradewind.vip;
 
-    # Specify SSL Config when needed
+    # Allow large attachments
+    client_max_body_size 128M;
+
+    location / {
+        resolver 223.5.5.5;
+        set $router "router.tradewind.vip";
+        proxy_set_header Host $host;
+	    proxy_redirect off;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_pass http://$router:10060;
+    }
+
+
     ssl_certificate /etc/letsencrypt/live/tradewind.vip/fullchain.pem;
     ssl_certificate_key /etc/letsencrypt/live/tradewind.vip/privkey.pem;
     ssl_session_timeout 1d;
     ssl_session_cache shared:MozSSL:10m;  # about 40000 sessions
     ssl_session_tickets off;
 
-    client_max_body_size 525M;
+    # modern configuration
+    ssl_protocols TLSv1.3;
+    ssl_prefer_server_ciphers off;
 
-    proxy_http_version 1.1;
+    # HSTS (ngx_http_headers_module is required) (63072000 seconds)
-    proxy_set_header Upgrade $http_upgrade;
+    add_header Strict-Transport-Security "max-age=63072000" always;
-    proxy_set_header Connection $connection_upgrade;
 
-    proxy_set_header Host $host;
+    # replace with the IP address of your resolver
-    proxy_set_header X-Real-IP $remote_addr;
+    resolver 223.5.5.5;
-    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-    proxy_set_header X-Forwarded-Proto $scheme;
-
-    location / {
-      proxy_pass http://vaultwarden-default;
 }
 
-    # Optionally add extra authentication besides the ADMIN_TOKEN
-    # Remove the comments below `#` and create the htpasswd_file to have it active
-    #
-    #location /admin {
-    #  # See: https://docs.nginx.com/nginx/admin-guide/security-controls/configuring-http-basic-authentication/
-    #  auth_basic "Private";
-    #  auth_basic_user_file /path/to/htpasswd_file;
-    #
-    #  proxy_pass http://vaultwarden-default;
-    #}
-}

sites-available/bitwarden_bak

@@ -0,0 +1,68 @@
+# The `upstream` directives ensure that you have a http/1.1 connection
+# This enables the keepalive option and better performance
+#
+# Define the server IP and ports here.
+upstream vaultwarden-default {
+  zone vaultwarden-default 64k;
+  server router.tradewind.vip:10060;
+  keepalive 2;
+}
+
+# Needed to support websocket connections
+# See: https://nginx.org/en/docs/http/websocket.html
+# Instead of "close" as stated in the above link we send an empty value.
+# Else all keepalive connections will not work.
+map $http_upgrade $connection_upgrade {
+    default upgrade;
+    ''      "";
+}
+
+# Redirect HTTP to HTTPS
+server {
+    listen 80;
+    listen [::]:80;
+    server_name bitwarden.tradewind.vip;
+
+    return 301 https://$host$request_uri;
+}
+
+server {
+    # For older versions of nginx appended http2 to the listen line after ssl and remove `http2 on`
+    listen 443 ssl;
+    listen [::]:443 ssl;
+#    http2 on;
+    server_name bitwarden.tradewind.vip;
+
+    # Specify SSL Config when needed
+    ssl_certificate /etc/letsencrypt/live/tradewind.vip/fullchain.pem;
+    ssl_certificate_key /etc/letsencrypt/live/tradewind.vip/privkey.pem;
+    ssl_session_timeout 1d;
+    ssl_session_cache shared:MozSSL:10m;  # about 40000 sessions
+    ssl_session_tickets off;
+
+    client_max_body_size 525M;
+
+    proxy_http_version 1.1;
+    proxy_set_header Upgrade $http_upgrade;
+    proxy_set_header Connection $connection_upgrade;
+
+    proxy_set_header Host $host;
+    proxy_set_header X-Real-IP $remote_addr;
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    proxy_set_header X-Forwarded-Proto $scheme;
+
+    location / {
+      proxy_pass http://vaultwarden-default;
+    }
+
+    # Optionally add extra authentication besides the ADMIN_TOKEN
+    # Remove the comments below `#` and create the htpasswd_file to have it active
+    #
+    #location /admin {
+    #  # See: https://docs.nginx.com/nginx/admin-guide/security-controls/configuring-http-basic-authentication/
+    #  auth_basic "Private";
+    #  auth_basic_user_file /path/to/htpasswd_file;
+    #
+    #  proxy_pass http://vaultwarden-default;
+    #}
+}