iptables tutorial –  rule sets for creating data packets

iptables tutorial: how to configure the filter tables of Linux kernels

Since the first version, Linux kernel has been implementing packet filter modules, with which filter tables can be created. However, additional programs such as iptables are required to configure the rule set. In our tutorial, we present the free software for the Linux kernel 2.4 and 2.6 and give you a little insight into how it all works.

Archiving and Compression Using Linux

Archive and compress data using Linux

Archiving and compressing files contributes positively to the security and stability of a system. For Linux and other unix-like systems, there are countless free programmes with which you can create unaltered or compressed archive files over the command line and extract them as well. One of the classic packing programmes for Linux is tar. Today, the tool still counts as one of the leading...

Nagios plugins: how to install the extensions

Nagios plugins: the basic modules of the popular IT monitoring software

Although the software itself doesn’t contain any functions for monitoring hosts, services, or events, Nagios is one of the most in-demand IT monitoring solutions. This task is left up to Nagios’ plugins, which can be installed in addition to the core files. Check out our digital guide and find out more about these indispensable modules and how to use these for your own Nagios installation.

Nagios – an overview of all network processes

Nagios: the standard server for monitoring IT infrastructure

IT departments are not to be envied: all devices, servers, databases, etc., must not only be integrated into the network, but also work at any time. In order to prevent any problems that might arise in advance, Nagios is the monitoring tool you need in your standard IT repertoire. What makes the open source solution so special and what are the alternatives?

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