What is Neighborhood Discovery Protocol(NDP)?
Neighbor Discovery Protocol (NDP) – what is it?
  • Know-how

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.

Neighbor Discovery Protocol (NDP) – what is it?
Penetration testing – the complete network check
Penetration test: how to find weak points in your network
  • Know-how

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...

Penetration test: how to find weak points in your network
NAT: How Network Address Translation works
NAT: Network Address Translation in the router
  • Know-how

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...

NAT: Network Address Translation in the router
Port scanning: introduction and basics
How port scanning contributes to your system’s security
  • Know-how

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...

How port scanning contributes to your system’s security
Bonjour: Software for zero configuration networking
Bonjour: What’s behind the zeroconf implementation
  • Know-how

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...

Bonjour: What’s behind the zeroconf implementation
Subnetting: How do subnets work?
Use subnetting to get the most out of your network
  • Know-how

Dividing a corporate network into smaller subnets has some advantages in terms of speed, security, and logical organization. However, many people find it difficult to set up. Binary computational operations and long series of numbers are frightening, but the principle itself is not so complicated. We explain what subnetting is, how to calculate a subnetmask, and what you need subnets for, so that...

Use subnetting to get the most out of your network
What is a floating IP?
What is a floating IP?
  • Know-how

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...

What is a floating IP?
What are the benefits of IPv6?
IPv6: All about the new internet standard
  • Know-how

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...

IPv6: All about the new internet standard
What is gzip and what are the program’s advantages?
What is gzip? – the compression tool in focus
  • Know-how

If you want to optimize your website in terms of performance and usability, you need to know a thing or two about compression. Whether it’s the HTML pages, the embedded media content, or CSS and JavaScript files: Compressing data doesn’t just save valuable web space, but also improves your website’s average loading time. A useful tool is gzip, a compression process, which all current web servers...

What is gzip? – the compression tool in focus
Raspberry Pi alternatives: Single board computers to check out
Four current Raspberry Pi alternatives: Single board computers by comparison
  • Know-how

Raspberry Pi is the first choice for do-it-yourselfers around the world when it comes to single-board computers: It’s small, cheap, and meets most server and media center requirements. But more and more manufacturers are putting their own mini-computers on the market: Raspberry Pi alternatives want to set themselves apart with lower prices, more powerful hardware, or edgy and exceptional features....

Four current Raspberry Pi alternatives: Single board computers by comparison