Network

SQL injection: Fundamentals and safeguards

SQL Injection: Protect your database system

There are daily reports on how security gaps in applications are exploited – because hardly a day goes by without a new gap being discovered or a known gap being closed. One attack method, which has always been based on exploiting such weak points, is called SQL injection. But what is actually hidden behind the malicious database exploitation and how can you protect your database system from it?

What is a reverse proxy?

Reverse proxy server – core components in security architecture

Cyber criminality is a big issue for most companies’ IT departments. Online attacks threaten the security of private networks and cause millions of dollars of damage per year. Popular targets are servers that provide online services and therefore require a permanent internet connection. An extra layer of security can be applied by using an upstream network component – the reverse proxy. This...

Ethernet frame

Ethernet frame: definition and variants of the frame format

Ethernet frames enable the transmission of data over an Ethernet connection and are essential for local area networks. Ethernet frames are structured and sized differently depending on the protocol, and contain important information such as MAC addresses, protocol information, length information, and much more. The established Ethernet standard IEEE 802.3 has also developed special frames for VLAN...

MAMP: the practical software stack for Mac OS X

MAMP: the local development environment for Mac OS X

If you’re developing a website, it’s important to regularly ensure that all the elements function as intended. Although there are no specific tools required for creating a basic info page with static content, it’s not possible to preview a project containing dynamic elements without some additional tools. The simplest solution is to use an all-in-one development environment like MAMP.

Terminal Servers – the Secret Behind Remote Hosts

Terminal servers: definition, basics, and advantages

In the days of mainframe computers and the first smaller networks, terminals were a crucial building block for sharing hardware and software resources. It is no coincidence that terminal servers – the central administrative entity of such networks – are in demand decades later, now that applications are to be made available to multiple users.

Hootsuite alternatives

Hootsuite alternatives: what do other social media tools have to offer?

Today, successful social media marketing campaigns are all done via special software that unites different accounts from different networks, making the work a lot easier. In recent years, Hootsuite has established itself as the market leader in this field. However, when it comes to Hootsuite alternatives, there are many competitors with promising options for those looking for a cheaper platform,...

DNSSEC – authenticated name resolution

DNSSEC: internet standards for 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...

Server failure – what to do?

Server failure: risks, consequences, countermeasures

Server failures can be devastating for businesses, especially if central business areas are controlled by IT systems since the longer the server is down, the costlier is it for the company. This can result in loss of sales and in the worst case, the loss of business or customer data. Here we demonstrate the internal and external sources of danger that can lead to server failure, explain the...

How to make your Raspberry Pi into a DNS server

Your own DNS server with Raspberry Pi: How to

Without the domain name system, surfing on the internet would be much more difficult, as we would have to memorise a lot of IP addresses. With the help of DNS servers, we can instead use a memorable domain name to access our favorite website. Find out how you can set up your own DNS server and learn more about the basics of the World Wide Web. All you need is the minicomputer Raspberry Pi and an...


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