HTTP

Server Name Indication

What is server name identification, really? Encryption technologies play a big role when it comes to surfing on the net. Credit card data and other personal information must not fall into the hands of criminals. For now, TLS is one of the protocols used for this purpose. But it has a disadvantage: it only functions when each IP address only hosts one domain. If multiple virtual services are...

Error 522: Explanation and solutions

52- HTTP error messages indicate a problem between the web server that is running a website and the Cloudflare CDN service. The 522 error is very common and is also known as the 'Cloudflare error'. It is displayed in the visitor’s browser whenever the mandatory TCP handshake fails. This guide explains the reason for this error message and what solutions there are for site operators and visitors.

HTTP 403 Forbidden | What is Error 403 and how do I fix it?

Is your browser displaying an http error 403 instead of the web page you requested? This means that the web server has not granted you access to that page. The reason for this differs from case to case; sometimes the website operator as secured this area from being accessed but sometimes it’s simply a case of adjusting your browser settings. This article outlines the various causes of the http...

401 error: What can you do about it?

You’re surfing around on the internet, but instead of getting the desired content you only receive an error message: annoying or even downright frustrating. Especially if you don’t exactly know what the status is supposed to mean. How are you expected to solve the problem, if you don’t know what’s causing it? This also goes for the error 401. Here we explain what the error means and what you can...

HTTP 400 Bad Request | finding the causes

Internet users are often confronted with error messages. HTTP status codes can be especially annoying, and even more so if you don’t understand what they mean. The message 'HTTP 400 – Bad Request' is a mystery for many internet users, but luckily it can be solved in most cases. We explain what the error message means and how to fix the error.

REST: the HTTP solution for web services

Combining different application systems has become increasingly important over the past few years. This trend is especially due to the increasing number of web applications being developed. In order to react to this trend, many different web services were developed that make data transfer across multiple systems possible. The Representational State Transfer (REST) is an architectural style that...

What does the '404 Not Found' error mean?

How often have you stumbled upon a dead end while surfing the net? HTTP 404 error pages are commonplace online to inform users that the requested page isn’t available. As well as being annoying for visitors, they spell bad news for website owners since a dead link may have a bad influence on a website’s search engine ranking. In this article, we’ll demonstrate the importance of 404 pages and...

HSTS: Reliably secure your HTTPS connections

HTTPS, the network protocol for TLS-encrypted data transfer online can be circumvented in some cases. The danger is that encrypted websites can be accessed via unencrypted HTTP. But the HTTPS extension HSTS (HTTP Strict Transport Security) forces website access via TLS encryption, closing the security gaps that hackers like to use to intercept the HTTPS connection during transport using...

What is a server? One term, two definitions

When talking about web hosting, it is impossible to avoid the term ‘server’. So what is a server? And how does it work? In IT, there are actually two definitions of the term. The traditional server is the software for network services, but more recently the word has also been used to describe the corresponding hardware used to carry out server programs. Here is our overview of the most common...

QUIC – the Internet Transport Protocol based on UDP

Quick UDP Internet Connections (QUIC for short), is an experimental network protocol from Google. Further development of the protocol is being driven by IETF, which has set up a dedicated group working towards it. The QUIC protocol is intended to offer a speed-optimized alternative to the current transport standard TCP and builds on the connectionless protocol UDP to achieve this.