Arm Apache for denial-of-service attacks
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...
Virtono Community Blog
Fix Apache Internal Server Error due to htaccess bad flag delimiter
The Apache web server has several causes that cause an internal server error . One possible cause is erroneous entries in an htaccess file, for example due to incorrectly defined forwarding. In this article we describe how you...
Analysis of rdiff-backup statistics
Data backups under Linux are easily and efficiently created with rdiff-backup . The tool written in Python also creates statistics for each backup pass and stores them in their own files. The following article explains what the values of the statistics mean and what values you must...
Kernel hackers want to use Yaml for hardware description
Device Tree Sources (DTS) are used in the Linux kernel for describing hardware and should in future be defined in the Yaml format. That brings some benefits, say kernel developers. The Device Trees concept is used in...
Fix the error “No init found Try passing init bootarg”
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...
Installing Synology Assistant on Ubuntu
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...
Google disassembles USB stack of the Linux kernel
With a special fuzzer for kernel system calls from Google , extremely many bugs have been found in the USB stack of the Linux kernel . Many of them are classified as critical vulnerabilities, which is true for all...
Unlock full-encrypted system via SSH
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...
Restrict executable SSH commands with authorized keys
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...
Set up password authentication with Active Directory under Debian
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,...
