Network analysis with Wireshark
With the program Wireshark you can read traffic from your network (sniff). In the example you see the possibility to analyze HTTP traffic. Example HTTP traffic On the start page, you can choose which interface...
Virtono Community Blog
Wlan power management under Linux with iw rules
The command-line tool iw allows a variety of configuration options for wireless devices. Since the power management concerning. The transmitting / receiving performance with some cards is problematic, you can disable this in Linux. The article shows how to...
Set up static ARP entry
This article describes how to create a static ARP entry on Linux and Windows. Static ARP entries for important network components in the same Layer 2 segment provide some protection against ARP spoofing. Ubuntu /...
Linux CPU Performance Measurements with mpstat
The Linux tool mpstat provides information about the utilization of the individual CPUs of a system. For multi-core CPUs, each core is displayed as a CPU. Hyperthreaded CPUs display two CPUs per physical CPU or physical core. For most...
Linux analysis of execution time with time
On Linux, the time command can be used to measure the execution time for a command line program. This article shows this with the example of the updatedb program. call The timecommand is simply given before the program...
Varnish Web accelerator
Varnish is a web accelerator (reverse proxy), which provides relief for the actual web server (the backend). It has been designed from the ground up just for this use, unlike traditional proxies (eg Squid). The project...
What was discontinued and closed in 2017
The year 2017 comes to an end and with it various projects, companies and products in the IT industry. Not only the Jamaican coalition failed and Germany’s formerly second largest airline filed for bankruptcy, many...
CPU bugs have been known since June 2017, according to Google
Not only Intel is affected by the serious vulnerability in processors, by which attackers can read sensitive data. Google’s Project Zero explains the functioning of the memory leaks and Linus Torvalds expects honesty. Intel wants to quickly take...
Monitor virtualized environments with Nagios and Icinga
As easy as real servers today can be converted into virtual machines, as fast as the overview is lost. With special monitoring adapted for virtual environments, you keep track of things. Virtualization is a technology...
Network configuration in Debian
This article gives an overview of how the network configuration in Debian can be stored and modified in the configuration file / etc / network / interfaces . Automatic activation at startup In order for certain interfaces to be activated automatically...
