Setting up Ubuntu config file in Nginx with SSL

serverUbuntu.conf

#
server {
    listen 80;
    listen [::]:80;
    server_name yourdomainname.com www.yourdomainname.com;
    return 301 https://$server_name$request_uri;
}
server {
    listen 443 ssl http2 default_server;
    listen [::]:443 ssl http2 default_server;
    server_name yourdomainname.com www.yourdomainname.com;
    location / {
        proxy_pass http://localhost:3000;
    }
    ssl_certificate /etc/letsencrypt/live/yourdomainname.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/yourdomainname.com/privkey.pem;
    ssl_session_timeout 1h;
    ssl_prefer_server_ciphers on;
    ssl_session_cache shared:SSL:5m;
    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
    add_header Strict-Transport-Security “max-age=15768000” always;
    ssl_ciphers EECDH+CHACHA20:EECDH+AES128:RSA+AES128:EECDH+AES256:RSA+AES256:EECDH+3DES:RSA+3DES:!MD5;
}
#