Generate A Key With Openssl Ubuntu

13.12.2020by
  1. Generate A Key With Openssl Ubuntu File
  2. Generate A Key With Openssl Ubuntu 10

Create a CSR & install your SSL certificate on your Ubuntu server with Apache2 using OpenSSL

  • Feb 06, 2019 When the certificate is signed, it is then ready to be used with the OpenSSL toolkit, or the library to enable encrypted SSL connections to a Lightweight Directory Access Protocol, (LDAP) or Hyper Text Transport Protocol (HTTP) server, for example. This section of the guide describes the certificate generation.
  • Feb 06, 2019  Generate the server certificate, and key with the following commands: export OPENSSLCONF=/myCA/exampleserver.cnf The previous command sets an environment variable OPENSSLCONF which forces the openssl tool to look for a configuration file in an alternative location (in this case, /myCA/exampleserver.cnf ).
  • Apr 21, 2016 openssl: This is the basic command line tool for creating and managing OpenSSL certificates, keys, and other files. Req: This subcommand specifies that we want to use X.509 certificate signing request (CSR) management. The “X.509” is a public key infrastructure standard that SSL and TLS adheres to for its key and certificate management.

Sep 11, 2018 The first thing to do would be to generate a 2048-bit RSA key pair locally. This pair will contain both your private and public key. You can use Java key tool or some other tool, but we will be working with OpenSSL. To generate a public and private key with a certificate signing request (CSR), run the following OpenSSL command. Nov 07, 2018  Generating a Certificate Signing Request (CSR) in Ubuntu 16.04. This guide will walk you through the steps to create a Certificate Signing Request, (CSR for short.) SSL certificates are the industry-standard means of securing web traffic to and from your server, and the first step to getting your own SSL is to generate a CSR. There are many reasons you might want to create a key pair on Linux, more specifically on Ubuntu. For more information about key pairs, see this. If your server is an Amazon EC2 Server Instance, you might want to look at more specific information here. Key pairs are just one way to log into a system. OpenSSL Certification Authority (CA) on Ubuntu Server. OpenSSL is a free, open-source library that you can use for digital certificates. One of the things you can do is build your own CA (Certificate Authority). A CA is an entity that signs digital certificates. An example of a well-known CA is Verisign.

Use the instructions on this page to use OpenSSL to create your certificate signing request (CSR) and then to install your SSL certificate on your Ubuntu server with Apache2.

Restart Note: After you've installed your SSL/TLS certificate and configured the server to use it, you must restart your Apache2 instance.

For Apache instructions, see Apache: Create CSR & Install SSL Certificate (OpenSSL). For other OS/platform instructions, see Create a CSR (Certificate Signing Request).

You can use these instructions to create OpenSSL CSRs and install all types of DigiCert SSL certificates on your Ubuntu server with Apache2: Standard SSL, EV SSL, Multi-Domain SSL, EV Multi-Domain SSL, and Wildcard SSL.

  1. To create your certificate signing request (CSR), see Ubuntu with Apache2: Creating Your CSR with OpenSSL.

  2. To install your SSL certificate, see Ubuntu with Apache2: Installing & Configuring Your SSL Certificate.

I. Ubuntu with Apache2: Creating Your CSR with OpenSSL

Use the instructions in this section to create your own shell commands to generate your Ubuntu with Apache2 CSR with OpenSSL.

Recommended: Save yourself some time. Use the DigiCert OpenSSL CSR Wizard to generate an OpenSSL command to create your Ubuntu with Apache2 CSR. Just fill out the form, click Generate, and then paste your customized OpenSSL command into your terminal.

How to Generate a CSR for Ubuntu with Apache 2 Using OpenSSL

If you prefer to build your own shell commands to generate your Ubuntu with Apache2 CSR, follow the instructions below.

  1. Log in to your server via your terminal client (ssh).

  2. Run Command

    At the prompt, type the following command:

    Note: Make sure to replace server with the name of your server.

    openssl req –new –newkey rsa:2048 –nodes –keyout server.key –out server.csr

  3. Generate Files

    1. You've now started the process for generating the following two files:

      • Private-Key File: Used to generate the CSR and later to secure and verify connections using the certificate.
      • Certificate Signing Request (CSR) file: Used to order your SSL certificate and later to encrypt messages that only its corresponding private key can decrypt.

    2. When prompted for the Common Name (domain name), type the fully qualified domain (FQDN) for the site that you are going to secure.

      Note: If you're generating an Apache CSR for a Wildcard certificate, make sure your common name starts with an asterisk (e.g., *.example.com).

    3. When prompted, type your organizational information, beginning with your geographic information.

      Note: You may have already set up default information.

    4. Now, your OpenSSL .csr file is created.

  4. Order Your SSL/TLS Certificate

    1. Open the .csr file you created with a text editor.

    2. Copy the text, including the -----BEGIN NEW CERTIFICATE REQUEST----- and -----END NEW CERTIFICATE REQUEST----- tags, and paste it in to the DigiCert order form.

  5. Save Private Key

    Save (back up) the generated .key file. You need it later to install your SSL certificate.

  6. Install Certificate

    After you've received your SSL certificate from DigiCert, you can install it on your server.

II. Ubuntu with Apache2: Installing and Configuring Your SSL Certificate

If you still need to create a certificate signing request (CSR) and order your certificate, see Ubuntu with Apache2: How to Use OpenSSL to Create Your CSR.

After we've validated and issued your SSL certificate, you can install it on your Ubuntu with Apache2 server (where the CSR was generated) and configure the server to use the certificate.

How to Install and Configure the SSL Certificate on Your Ubuntu Server with Apache2

  1. Copy the certificate files to your server.

    1. Log in to your DigiCert account and download the intermediate (DigiCertCA.crt) and your primary certificate (your_domain_name.crt) files.

    2. Copy these files, along with the .key file you generated when creating the CSR, to the directory on the server where you keep your certificate and key files.

      https://treeyu793.weebly.com/blog/oxygen-25-driver-download-mac. Note: Make them readable by root only to increase security.

  2. Find the Apache configuration file you need to edit.

    The location and name of the configuration file can vary from server to server-especially if you're using a special interface to manage your server configuration.

    • The Ubuntu server with Apache2 main configuration file for your SSL/TLS site is typically found in /etc/apache2/sites-enabled/your_site_name.

    • If it's not found in the 'sites-enabled' directory, run the command below.

      sudo a2ensite your_site_name

    • Open the file with a text editor and find the <VirtualHost> blocks that contain the Apache settings.

  3. Identify the SSL <VirtualHost> block you need to configure.

    If your site needs to be accessible through both secure (https) and non-secure (http) connections, you need two separate files in /etc/apache2/sites-enabled/. One file is for port 80 and the other file is for port 443. Configure both files for SSL as described in step 4.

    If your site only needs to be accessed securely, configure the existing virtual host for SSL as described in step 4.

  4. Configure the <VirtualHost> block for the SSL-enabled site

    1. Below is a very simple example of a virtual host configured for SSL. The parts listed in blue are the parts you must add to configure the SSL configuration; they may be spread throughout the file.

      <VirtualHost 192.168.0.1:443>
      DocumentRoot /var/www/
      SSLEngine on
      SSLCertificateFile /path/to/your_domain_name.crt
      SSLCertificateKeyFile /path/to/your_private.key
      SSLCertificateChainFile /path/to/DigiCertCA.crt
      </VirtualHost>

    2. Make sure to adjust the file names to match your certificate files.

      • SSLCertificateFile is your DigiCert certificate file (e.g., your_domain_name.crt).

      • SSLCertificateKeyFile is the .key file generated when you created the CSR (e.g., your_private.key).

      • SSLCertificateChainFile is the DigiCert intermediate certificate file (e.g., DigiCertCA.crt)

        Note: If the SSLCertificateChainFile directive doesn't work, try using the SSLCACertificateFile directive instead.

  5. Test your Apache2 configuration file before restarting.

    As a best practice, check your Apache2 configuration file for any errors before restarting Apache.

    Caution: Apache2 won't start again if your configuration files have syntax errors.

    Run the following command to test your configuration file (on some systems, it's apache2ctl):

  6. Restart Apache2.

    You can use apachectl commands to stop and start Apache2 with SSL support.

    apachectl stop
    apachect1 start

    Restart Notes:

    If Apache2 doesn't restart with SSL support, try using apachectl startssl instead of apachectl start. If SSL support only loads with apachectl startssl, we recommend you adjust the apache startup configuration to include SSL support in the regular apachectl start command. Otherwise, your server may require you to manually restart Apache2 using apachectl startssl in the event of a server reboot. This usually involves removing the <IfDefine SSL> and </IfDefine> tags that enclose your SSL configuration.

  7. Congratulations! You've successfully installed your SSL certificate.

Testing Your SSL/TLS Certificate Installation

  1. Browser Test

    1. For best results, make sure to close your web browser first and then re-launch it.

    2. Visit your site with the secure https URL (i.e., go to https://www.example.com not http://www.example.com).

    3. Be sure to test your site with more than just Internet Explorer. IE downloads missing intermediate certificates; whereas, other browsers give an error if all the certificates in the certificate chain aren't installed properly.

  2. DigiCert® SSL Installation Diagnostic Tool

    If your site's publicly accessible, use our Server Certificate Tester to test your SSL/TLS certificate installation; it detects common installation problems.

Configuration and Useful Commands

Generate A Key With Openssl Ubuntu File

Install Apache2

Required to use SSL/TLS certificates:

Enable SSL Module

  1. Replace 'default-ssl' with the real site name you set up in /etc/apache2/sites-available/.

    sudo a2enmod ssl

  2. Once the site listed in the command above is enabled, the site appears in /etc/apache2/sites-enabled.

Generate A Key With Openssl Ubuntu 10

Apply SSL Module to Site

sudo a2ensite default-ssl
sudo /etc/init.d/apache2 restart

Cipher Suite

  • Once you run the sudo a2enmod ssl command, edit the ssl.conf file in /etc/apache2/mods-enabled.

  • If you haven't run the a2enmod command yet, preconfigure the ssl.conf file in /etc/apache2/mods-available.

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