Security

Securing your server with Fail2ban

For server operators, security is of the utmost importance. Only those who have developed and set up a foolproof defence strategy are ready for drastic situations. As well as regular protection mechanisms, like security software, backups, and encryption, there are also some useful tools and frameworks that may come in handy in the fight against intruders. We have laid out essential details on the security framework, Fail2ban. [...]  

How to use SSH keys for your network connection

Operating and managing a remote server located in a data centre is often carried out by using a secure network connection provided by the SSH protocol. The necessary registration on the server is preceded by an authentication process. Usually this occurs in the form of the username and password. Alternative methods such as the public key authentication used by SSH, do have their advantages. But how are these set up? [...]  

Malicious software: how to recognise, remove, and prevent malware

Practically every PC user fears Trojan horses and computer viruses. Security is paramount if you are managing sensitive data or setting up a server. You need a comprehensive security concept to protect yourself against insidious malware. It’s helpful to know the different types of malicious software that exists, and how to combat and safely remove them. [...]  

Demilitarized zones: internal network protection

Companies hosting their own websites, an online shop, or e-mail inboxes should make sure to separate the corresponding server of these from the local network. This makes it possible to protect devices within the company network from hacker attacks that take place on public networks. Solid protection comes in the form of a demilitarized zone, which separates endangered systems from sensitive network areas. [...]  

Password manager – a glance at the best tools

Would you give your account number to a stranger? Most probably not. But millions of internet users may as well be giving away their personal data (and money!) when using passwords that hackers can crack in a matter of seconds. Password managers provide methods for creating and managing truly secure passwords. [...]