Protocols

DNSSEC – authenticated name resolution

Without the Domain Name System, users of the World Wide Web would have serious problems when trying to load websites and other online presences. It’s only thanks to this system that internet addresses appear in their trusted text format: they’re actually nothing more than combinations of numbers. The communication between browser and name server responsible for this isn’t actually as secure as you might think – which is why experts have been working on security solutions like DNSSEC for years. [...]  

NGINX: basics, installation, and set-up

For years, Apache had been the uncontested go-to web servers and comprised the basis of most websites published in the World Wide Web. The increasing technical requirements of modern web projects and the growing demands and expectations of internet users has brought on a sea change of sorts. Alternatives like NGINX are becoming ever more popular and are slowly creeping up on the classic server solution’s number-one spot. [...]  

How to set up a proxy server in your browser

Proxy settings can be established quickly and easily via the operating system’s control panel or browser menu. Discover exactly how to do this with our comprehensive step-by-step introductions for Windows 7, 8, and 10. A faulty proxy configuration can cause connection failures, but there are simple ways to detect the causes and rectify these errors. [...]  

What is a floating IP?

IP addresses are essential for modern digital communication. They are the 'connection numbers' of all devices in the network and this is why they are one of key foundation elements of the internet as well as other networks. Communication is based on a common 'language': the internet protocol. But what exactly is a floating IP and what is it used for? What is the difference between a floating IP of static and dynamic IPs? [...]  

Nagios – an overview of all network processes

IT departments are not to be envied: all devices, servers, databases, etc., must not only be integrated into the network, but also work at any time. In order to prevent any problems that might arise in advance, Nagios is the monitoring tool you need in your standard IT repertoire. What makes the open source solution so special and what are the alternatives? [...]  

Remote access for network storage

Are you using a NAS system as a home server and want to connect it to the internet? It’s simple to do. We explain how to assign a fixed LAN IP address to your network storage and open the corresponding ports for the desired service in the router firewall. You will also learn how to make your NAS system permanently available under a consistent address despite daily disconnections carried out by the internet service provider. [...]  

What are the benefits of IPv6?

IPv6 is the newest version of the internet protocols, and should overcome the central issues of its predecessors. Included in these issues is the impending shortage of IPv4 addresses as well as the violation of the end-to-end principle by the strict separation of public and private IPs. This article gives an overview of the functions of IPv6 as well as the structure and distribution of address space. [...]  

Web stacks: the basics and examples

Terms like web stack or web application stack refer to software packages that are used to develop and operate websites and web applications. The most well-known example of this technology, the LAMP stack, has witnessed increasing competition through the likes of JavaScript-based framework bundles, which feature unified programming languages for servers and clients. This gives them a considerable advantage when developing single-page applications. [...]  

The OSI model: a reference for standards and protocols

Those working with network technology are bound to encounter the ISO-OSI model sooner or later. This system subdivides communication between computer systems into seven different layers. Each of these layers is assigned a certain task. With the help of this layer model, subareas of abstract processes are able to be descriptively explained. [...]  

Log file analysis with open source tool, GoAccess

The log files of web servers and cloud services reveal a lot about the users that access them. They contain information about which browser or operating system is being used, which search terms have been entered and how many different pages a user has accessed, for example. Since manually analyzing these extensive text files is nigh on impossible, you can use log file analysis programs such as GoAccess, which process corresponding information and present it in clear reports. [...]