CentOS Stream 8
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Nginx : SSL/TLS Setting
2021/04/08
 
Enable SSL/TLS setting to use secure encrypted connection.
[1]
[2] Configure Nginx. For example, enable SSL/TLS on default site.
[root@www ~]#
vi /etc/nginx/conf.d/ssl.conf
# create new

# replace servername and path of certificates to your own one

server {
    listen       443 ssl http2 default_server;
    listen       [::]:443 ssl http2 default_server;
    server_name  www.srv.world;
    root         /usr/share/nginx/html;

    ssl_certificate "/etc/letsencrypt/live/www.srv.world/fullchain.pem";
    ssl_certificate_key "/etc/letsencrypt/live/www.srv.world/privkey.pem";
    ssl_session_cache shared:SSL:1m;
    ssl_session_timeout  10m;
    ssl_ciphers PROFILE=SYSTEM;
    ssl_prefer_server_ciphers on;

    include /etc/nginx/default.d/*.conf;

    location / {
    }

    error_page 404 /404.html;
        location = /40x.html {
    }

    error_page 500 502 503 504 /50x.html;
        location = /50x.html {
    }
}

[root@www ~]#
systemctl restart nginx

[3] If you'd like to set HTTP connection to redirect to HTTPS (Always on SSL/TLS), configure like follows.
[root@www ~]#
vi /etc/nginx/nginx.conf
# add into the section of listening 80 port

    server {
        listen       80 default_server;
        listen       [::]:80 default_server;
        return       301 https://$host$request_uri;
        server_name  www.srv.world;
        root         /usr/share/nginx/html;

[root@www ~]#
systemctl restart nginx

[4] If Firewalld is running, allow HTTPS service. HTTPS uses [443/TCP].
[root@www ~]#
firewall-cmd --add-service=https --permanent

success
[root@www ~]#
firewall-cmd --reload

success
[5] Verify to access to the test page from a client computer with a Web browser via HTTPS. If you set Always On SSL/TLS, access with HTTP to verify the connection is redirected to HTTPS normally, too.
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