Network

What is ARP? – Address resolution in networks

What is ARP (Address Resolution Protocol)?

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,...

Provide Raspberry Pi with a static IP address

Equip Raspberry Pi with a static IP address

Both the private Raspberry Pi IP address and the public IP address of the internet connection are constantly changing for most users. Such dynamic IP addresses aren’t practical for the use of a minicomputer. But if you want to use server software effectively on your Raspberry Pi, you need a static IP address for the computer in the local network. The internet access used to make the server...

DHCP: An overview of the Client/Server protocol

DHCP: What’s behind the Dynamic Host Configuration Protocol

If you’re connected to an internet router and power on your computer, it automatically obtains the necessary network parameters, such as the IP address, subnet mask, or DNS server. This is made possible by the Dynamic Host Configuration Protocol (DHCP), which simplifies address assignment when connecting to the internet and makes setting up local networks easy as pie.

Internet lite: North Korea’s 28 Domains

North Korea: 28 domains for 25 million inhabitants

In so far as is possible, the communist state of North Korea has managed to shut itself off from the rest of the world. However a western IT expert recently succeeded in sneaking a peek at their internet domains and as a result we now know that there are only 28 domains for the entire country. From recipes to maritime affairs, here you’ll find an insight into what a North Korean can find online.

SNMP: Simple Network Management Protocol

SNMP (Simple Network Management Protocol): the protocol for network management

The communication protocol SNMP (Simple Network Management Protocol) is an elementary component of many network management applications. It defines a number of message types that greatly simplify the monitoring and administration of individual network participants such as PCs, routers, servers, switches, firewalls, or printers. How exactly the SNMP protocol works and what fundamental adjustments...

MPLS:  What is Multiprotocol label switching?

MPLS: What’s behind the network technology

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).

Broadcast address

What is a broadcast address and how does it work?

Broadcasting is one of the most diverse means of communicating in a network. A data packet is sent to an entire network from one point, without having to specify one or more recipients. You direct your data packet to the broadcast address to do this. In this article, we explain what the broadcast IP is and how you can find out this address. We also give you a simple explanation of what a broadcast...

The different network types

Network types at a glance

When several computers are connected to one another it is known as a network. Networks enable data exchange between different devices, making shared resources available. Different network types are implemented depending on which transmission techniques and standards are used. These differ in terms of the number of connected systems and potential reach.

SNTP: simple network time protocol

Simple network time protocol: the stripped-back protocol for time synchronization

An exact system time on a computer is especially important when devices need to exchange data. Cross-system processes quickly come to a standstill if the generated time stamps are very different from the time that applies to the system. Synchronization methods that keep the clocks of the individual network participants in sync are utterly indispensable. One of the simplest methods to achieve time...

Protection against ransomware, spyware, and scareware

Ransomware, adware, etc. – how can you protect yourself?

The internet is a playground for cybercriminals and fraudsters – for many, this is an annoying and frightening reality. The threats from unwanted software range from harmless advertising to trojans, which can paralyze complete computer networks. The forms of malicious software or malware are diverse, the countermeasures often very simple. In our article, you can read about how ransomware, spyware,...


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