Ubuntu FTP server: How the setup functions

For the past 30 years, the file transfer protocol (FTP) has supported computer users with the transfer of data in TCP/IP networks. FTP servers enabled not only the upload but also the download of files, in which each access is controlled via a separate connection. In this Ubuntu FTP server tutorial, you’ll learn how to install, configure, and run your own server under the Linux distribution.   

Encryption methods: An overview

E-mail, instant messaging, or voice-over IP: If you want to communicate over the internet, you should make sure that the data transfer process can be trusted. The same goes for the World Wide Web. With online banking and digital shopping, money transactions are increasingly being carried out online. Popular encryption methods like DES, AES, or RSA should guarantee the security of passwords, credit [...]   

Alternatives to Docker: an overview of the container platform

Docker is currently doing very well for itself, but there are many forerunner technologies and competitor products following in the market leader’s wake. They also offer attractive alternative solutions for resource-saving virtualisation on an operating system level. We give you an overview of the most important options in the container industry, and introduce established container formats and [...]   

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: 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.   

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).   

The right configuration to secure your server

If you operate or rent your own server, it is your responsibility to protect it against failures and external access. You can immediately begin to set the foundation for this when configuring the server, if you have the necessary administrative rights. The correct settings can work wonders, especially with encrypted remote connections via SSH protocol, and greatly increase security.   

HTTPoxy: Threatening the security of CGI applications

Fifteen years after the discovery of the security flaw HTTPoxy, it’s still an issue with CGI applications. The reason for this is the fact that the Common Gateway Interface standard provides the use of environment variables to process HTTP requests. These can include header contents that modify the original proxy configuration, allowing hackers to redirect data packets to a completely foreign [...]   

Neighbour Discovery Protocol (NDP) – what is it?

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.   

Dynamic DNS (DynDNS): making remote control easier

Being able to access your home computer from another location is no longer a complicated matter thanks to remote connection. It is handy to be able to use your computer from the office and swap files. But IP addresses change often and this throws a spanner in the works. DynDNS (DDNS) services are the solution. In this article, we explain what these are and how you can access your computer via the [...]