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 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...
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...
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...
A little thought experiment: You want to write a web server, so program a socket-based server. When a browser connects to it and requests a file, it delivers it, the client terminates the connection, and...
If a system with Ubuntu Linux does not shut down correctly, but suddenly fails due to a power failure without UPS backup, it can at the next start attempt for error message No init found. Try...
This article shows how to install Synology Assistant on Ubuntu . The Synology Assistant is a small tool to disk or RackStations to locate the local network. It facilitates the commissioning of a new NAS and connects after entering the user information to the...
A complete encryption of your own system is an excellent way to ensure the confidentiality of your own data. The current Ubuntu installer offers a guided installation to encrypt the entire system with ” encrypted LVMs “. For...
The OpenSSH Secure Shell Server provides secure, encrypted remote access to Linux and Unix systems. The server side is the file authozired_keys in .ssh a user’s primary folder to configure a public-key authentication . Normally, a user gets full access to the system where the authentication...
Centralized directory services such as OpenLDAP or Active Directory (AD) simplify password management for the administrator and the user. In terms of Linux servers, the aspect of SSH authentication via AD is especially interesting. From the point of view of IT security,...
