DIY projects such as timers, remote controls, robots, and drones are becoming ever more popular. Knowledge of such things as electronics and programming, though, is fading into the background – thanks to ready-to-use, affordable components such as Arduino boards and minicomputers like Raspberry Pi. They allow for novices and amateur hobby craftsmen to obtain their own results quickly without...
The Uniform Resource Locator (short: URL) is one of the basic standard tools of the internet. URLs make it easy to uniquely identify resources on the internet and find their location. Internet users use webpage URLs to surf the web, follow hyperlinks or download files. The concept is based on a human tangible syntax that is automatically read out and interpreted by machines.
Apache vs. NGINX – while one is said to be bulky and unwieldy, the other is considered slim and high-performance. But can we be this general? In fact, both web servers are based on fundamentally different concepts when it comes to connection management, interpretation of client requests, or configuration options. The range of functions also display clear differences in software alignment. While...
When computer information is sent in TCP/IP networks, it is first decompressed into individual data frames. In this way, you can transfer data of nearly unlimited size. The frames also contain the target system’s MAC address, without which a transmission would not be possible. If the physical address is not known, the sender must first be determined using the ARP Address Resolution Protocol. Here,...
Speed and reliability play an important role for data transfer in networks. They reflect the quality of the connection, which is why providers do everything they can to guarantee the agreed services. A method primarily used in virtual private networks is the so-called multiprotocol label switching (MPLS).
Network configurations today are done quickly. For those who do not rely on their own fixed settings for routers, computers, and more, the Internet Protocol family provides the appropriate set of automatic mechanisms to determine critical parameters, such as the default gateway, IP address, and MAC address.
The more complex a network is, the more vulnerable it is to attacks. In times when customers and partners have access to internal network structures via the internet, and can control various applications via web interfaces, IT employees are encountering more and more problems. Large companies, in particular, prefer to use penetration testing to check how well their security concept works. This...
NAT, the network address translation, is closely tied to the internet standard IPv4 and will disappear from the internet along with it. But the implementation of IPv6 is slow to take over, and many internet users worldwide still surf with the fourth version of the internet protocol. As a result, network address translation via NAT tables remains current. In our guide, we answer the questions: What...
It’s easy to lose track of all the different programs that are responsible for inbound and outbound data traffic. Networks hosting a large number of computer systems that are constantly communicating with online services often require technical backup. High-performance tools check the activities of various applications or computers and can close existing security gaps. Using port scanners is one...
Manually organizing a large local network can be a nerve-wracking and very complicated matter. Without your own DHCP and DNS servers to support you in the distribution of addresses and name resolution, all IPs would have to be entered manually and also updated independently if changes are made in the network. Zeroconf implementations like Bonjour, which connect network components without almost no...
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