How to fix

How to flush DNS cache in Ubuntu / Debian / Linux Mint

The Domain Name System (DNS) is a hierarchical decentralized naming system. It’s used for computers, services, or other resources connected to the Internet or a private network. It associates various information with domain names assigned to each of the participating entities. Most prominently, it translates more readily memorized domain names to the numerical IP addresses.Continue Reading


How to use Let’s Encrypt for NGINX on Ubuntu

Let’s Encrypt is an SSL certificate authority managed by the Internet Security Research Group. Web server NGINX is a free, open-source, high-performance HTTP server. You can use HTTPS (an extension of HTTP with SSL / TLS encryption) on your website to secure connection. Install packages: apt updateapt install -y \ python-software-properties software-properties-common add-apt-repository ppa:certbot/certbot apt update aptContinue Reading