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How to Install SSL Certificate on NGINX

1. Generate file .key and .csr

Don’t miss to set Common Name as *.mydomain.com because we use GlobalSign Wildcard AlphaSSL.

$ openssl req -new -newkey rsa:2048 -nodes -keyout mydomain.com.key -out mydomain.com.csr

Generating a 2048 bit RSA private key
...............................................................+++
.....................+++
writing new private key to 'mydomain.com.key'
-----
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Country Name (2 letter code) [AU]:ID
State or Province Name (full name) [Some-State]:Jakarta
Locality Name (eg, city) []:North Jakarta
Organization Name (eg, company) [Internet Widgits Pty Ltd]:PT. Wong Fang Chai
Organizational Unit Name (eg, section) []:Logistic
Common Name (e.g. server FQDN or YOUR name) []:*.mydomain.com
Email Address []:[email protected]

Please enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []:MyPassword123
An optional company name []:My Company Name

And the result of it, is look like this:

$ cat mydomain.com.csr

-----BEGIN CERTIFICATE REQUEST-----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-----END CERTIFICATE REQUEST-----




$ cat mydomain.com.key

-----BEGIN PRIVATE KEY-----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-----END PRIVATE KEY-----

2. Put that BEGIN CERTIFICATE REQUEST into your SSL Provider

csr config

  • For example, I using rumahweb provider.
  • Choose domain validation (in this method, you can using email, domain, dns, or etc).

3. Configure domain validation in your vps server.

Put this meta tag below into your /.well-known/pki-validation/gsdv.txt
You can using ssh to login into your server, makesure the port 22 (for ssh) is opened.

<meta name="_globalsign-domain-verification" content="xxxxxxx-xxx-xxxx" />

ssl validation

[email protected]:~$ cd /var/www/html/
[email protected]:/var/www/html$ ls
index.nginx-debian.html
[email protected]:/var/www/html$ sudo mkdir -p .well-known/pki-validation
[email protected]:/var/www/html$
[email protected]:/var/www/html$ sudo nano .well-known/pki-validation/gsdv.txt
[email protected]:/var/www/html$

4. Setup the .crt and .key in the server.

Finally, after domain validation was configured after waiting a configuration,
the SSL Provider will provide you the some keys, eg: rootCert, interCert, X509Cert and etc.

ssl information

Combine that X509Cert and interCert as mydomain.com.crt file.
NOTE: Please put it in order (1:X509Cert, 2:interCert)

[email protected]:/etc/ssl$ cat mydomain.com.crt

-----BEGIN CERTIFICATE-----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.....etc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-----END CERTIFICATE-----


-----BEGIN CERTIFICATE-----
MIIETTCCAzWgAwIBAgILBAAAAAABRE7wNjEwDQYJKoZIhvcNAQELBQAwVzELMAkG
A1UEBhMCQkUxGTAXBgNVBAoTEEdsb2JhbFNpZ24gbnYtc2ExEDAOBgNVBAsTB1Jv
b3QgQ0ExGzAZBgNVBAMTEkdsb2JhbFNpZ24gUm9vdCBDQTAeFw0xNDAyMjAxMDAw
MDBaFw0yNDAyMjAxMDAwMDBaMEwxCzAJBgNVBAYTAkJFMRkwFwYDVQQKExBHbG9i
YWxTaWduIG52LXNhMSIwIAYDVQQDExlBbHBoYVNTTCBDQSAtIFNIQTI1NiAtIEcy
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2gHs5OxzYPt+j2q3xhfj
.....etc
yolQL30EzTSo//z9SzANBgkqhkiG9w0BAQsFAAOCAQEAYEBoFkfnFo3bXKFWKsv0
XJuwHqJL9csCP/gLofKnQtS3TOvjZoDzJUN4LhsXVgdSGMvRqOzm+3M+pGKMgLTS
xRJzo9P6Aji+Yz2EuJnB8br3n8NA0VgYU8Fi3a8YQn80TsVD1XGwMADH45CuP1eG
l87qDBKOInDjZqdUfy4oy9RU0LMeYmcI+Sfhy+NmuCQbiWqJRGXy2UzSWByMTsCV
odTvZy84IOgu/5ZR8LrYPZJwR2UcnnNytGAMXOLRc3bgr07i5TelRS+KIz6HxzDm
MTh89N1SyvNTBCVXVmaU6Avu5gMUTu79bZRknl7OedSyps9AsUSoPocZXun4IRZZUw==
-----END CERTIFICATE-----

Don’t miss to add also your previous mydomain.com.key into folder /etc/ssl/

[email protected]:/etc/ssl$ cat mydomain.com.key

-----BEGIN PRIVATE KEY-----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-----END PRIVATE KEY-----

5. Setup Nginx

$ sudo nano /etc/nginx/sites-available/mydomain.com

Inside file of mydomain.com, add your /etc/ssl/mydomain.com.crt
and /etc/ssl/mydomain.com.key into this file.

server {
    listen 80;
    server_name mydomain.com www.mydomain.com;
    return 301 https://$server_name$request_uri;
}

server {
    # Install SSL
    listen                  443 ssl;
    ssl_certificate         /etc/ssl/mydomain.com.crt;
    ssl_certificate_key     /etc/ssl/mydomain.com.key;

    root /var/www/html;

    # Add index.php to the list if you are using PHP
    index index.html index.htm index.nginx-debian.html;

    server_name mydomain.com www.mydomain.com;

    location / {
            # First attempt to serve request as file, then
            # as directory, then fall back to displaying a 404.
            try_files $uri $uri/ =404;
    }

    # add Strict-Transport-Security to prevent man in the middle attacks
    add_header Strict-Transport-Security "max-age=31536000" always;
}

Don’t miss to create a symlink file.

$ sudo ln -s /etc/nginx/sites-available/mydomain.com /etc/nginx/sites-enabled/

And then you can test it using sudo nginx -t, if it passed you can restart the nginx server.

[email protected]:~$ sudo nginx -t
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful


[email protected]:~$ sudo systemctl restart nginx
[email protected]:~$ sudo systemctl restart gunicorn  # if you have gunicorn

6. Finally

Finally, you can checkout your domain mydomain.com, it will automaticly redirect as https mode.
To check your keys chain is correct or not, you can checkout at https://whatsmychaincert.com/?mydomain.com

ssl server linux security

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