![]() The “X.509” is a public key infrastructure standard that SSL and TLS adheres to for its key and certificate management. req: This subcommand specifies that we want to use X.509 certificate signing request (CSR) management.openssl: This is the basic command line tool for creating and managing OpenSSL certificates, keys, and other files.Before we go over that, let’s take a look at what is happening in the command we are issuing: sudo openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout /etc/ssl/private/nginx-selfsigned.key -out /etc/ssl/certs/nginx-selfsigned.crt.We can create a self-signed key and certificate pair with OpenSSL in a single command: It can be used to decrypt the content signed by the associated SSL key. The SSL certificate is publicly shared with anyone requesting the content. It is used to encrypt content sent to clients. The SSL key is kept secret on the server. TLS/SSL works by using a combination of a public certificate and a private key. When you have completed the prerequisites, continue below. If you just want the Nginx web server, you can instead follow our guide on installing Nginx on Ubuntu 16.04. If you would like to install an entire LEMP (Linux, Nginx, MySQL, PHP) stack on your server, you can follow our guide on setting up LEMP on Ubuntu 16.04. You will also need to have the Nginx web server installed. You can learn how to set up such a user account by following our initial server setup for Ubuntu 16.04. ![]() Prerequisitesīefore you begin, you should have a non-root user configured with sudo privileges. ![]() You can find out how to set up a free trusted certificate with the Let’s Encrypt project here. If you do have a domain name, in many cases it is better to use a CA-signed certificate. However, because it is not signed by any of the trusted certificate authorities included with web browsers, users cannot use the certificate to validate the identity of your server automatically.Ī self-signed certificate may be appropriate if you do not have a domain name associated with your server and for instances where the encrypted web interface is not user-facing. Note: A self-signed certificate will encrypt communication between your server and any clients. ![]()
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