What are Data URLs?

A Data URL is a URI scheme that provides a way to inline data in a document, and it’s commonly used to embed images in HTML and CSS. Data URLs are a form of Uniform Resource Locators, although they do not in fact remotely locate anything. Instead, the resource data is contained within the URL string itself as a base64-encoded string. This saves the browser from having to make additional HTTP requests for the external resources, and can thus increase page loading speed. Read More …

Direct Broadcast Address (DBA)

With directed broadcast, all recipients are always addressed within the target network. A combination of the number of the target network and the setting of all host bits to 1 produces the broadcast address in this case. If the destination is not located in its own (sub-) network, a router forwards the data packet. Read More …

Ubuntu – What is netplan?

Since Ubuntu 18.04 LTS has switched to Netplan for configuring network interfaces. Netplan is based on YAML based configuration system that makes configuration process very simple. Using netplan gives a central location to describe simple to complex networking configurations that function from Desktop to Server and from Cloud to IoT environments. Read More …

Nginx – Password Protect Web Directories

Managers of web projects often need to protect their work one way or another. Often people ask how to password protect their website while it is still in development. On an Apache web server, it’s possible to password protect a directory using .htaccess and .htpasswd files. However, .htaccess files are not supported on Nginx. Read More …

Nginx – Enable HTTP/2

Hypertext Transfer Protocol Version 2 (HTTP/2) is the latest version of the HTTP protocol, published as an IETF standard in RFC 7540 in 2015. The focus of the protocol is on performance; specifically, end-user perceived latency, network and server resource usage. Read More …