How to apply HTTPS or SSL to System

1.If enable HTTPS with Certbot

• Install Certbot:

  • sudo apt install certbot python3-certbot-nginx -y

• Obtain an SSL certificate:

  • sudo certbot --nginx -d verify.rupp.edu.kh

2. If use own Certificate 

• Make folder letsencrypt-rupp into /etc and past file certificates_rupp.
• And replace this code in nginx

  • server {
        server_name verify.rupp.edu.kh;
    
        location / {
            proxy_pass http://127.0.0.1:3000;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection 'upgrade';
            proxy_set_header Host $host;
            proxy_cache_bypass $http_upgrade;
        }
    
        listen 443 ssl; # managed by itc
        ssl_certificate /etc/letsencrypt-rupp/certificates_rupp/rupp.edu.kh.crt; # managed by itc
        ssl_certificate_key /etc/letsencrypt-rupp/certificates_rupp/rupp.edu.kh.key; # managed by itc
    
    }
    server {
        if ($host = verify.rupp.edu.kh) {
            return 301 https://$host$request_uri;
        } # managed by itc
    
    
        server_name verify.rupp.edu.kh;
    
        listen 80;
        return 404; # managed by itc
    }