The release of RTOS Zephyr 2.3.0 has been introduced. Zephyr is based on a compact kernel designed for use in resource-constrained systems and embedded systems. It is distributed under the Apache 2.0 license and is supported by the Linux Foundation. The Zephyr kernel supports multiple architectures, including ARM, Intel x86/x86-64, ARC, NIOS II, Tensilica Xtensa, and RISC-V 32. Key improvements in this release include a new Zephyr CMake package, […]
In its developments, Huawei is focusing on Wi-Fi 6. Questions from colleagues and clients regarding the new generation of the standard prompted us to write a post about the theoretical foundations and physical principles underlying it. We will transition from history to physics, thoroughly examining the necessity of OFDMA and MU-MIMO technologies. We will also discuss how the fundamentally redesigned […]
OpenShift virtualization (upstream project – Kubernetes: KubeVirt, see here and here), originally known as Container-native Virtualization, has been introduced as a feature of the OpenShift platform designed for deploying and managing virtual machines (VMs) as fundamental entities of Kubernetes. This type of task is technically complex due to the fundamental differences in technologies. To achieve the set goals, familiar […]
In the developing project GNU library for performing DNS requests, adns, seven vulnerabilities have been identified, four of which (CVE-2017-9103, CVE-2017-9104, CVE-2017-9105, CVE-2017-9109) can be exploited to conduct remote code execution attacks on the system. The other three vulnerabilities lead to denial of service through the crashing of applications using adns. The adns package includes a C library and a set of utilities for […]
For processors across a wide range of Armv8-A architectures (Cortex-A), a unique vulnerability has been identified for side-channel attacks utilizing speculative computation algorithms. ARM has reported this and provided patches and guidance for mitigating the identified vulnerability. The risk is not overwhelming, but it should not be ignored, as processors based on ARM architecture are everywhere, making the risk of leaks […]
Hello colleagues! Now that the excitement around remote work has calmed down a bit, and most admins have successfully enabled remote access for employees to the corporate network, it's time to share my long-standing approach to enhancing VPN security. This article will not cover the currently popular IPSec IKEv2 and xAuth. Instead, we'll discuss building a two-factor authentication (2FA) system for VPN users, with MikroTik serving as the […]
In this article, I will discuss 1C and КлиК not as ready-to-implement solutions, but as platforms for creating customized solutions. 1C Client Communicator Free versions are not available. A free educational version is available with many different limitations. Any configuration can be used in single-user mode for free and without restrictions. Installation File version (not recommended for network use): […]
Two years after the last release, the Pidgin 2.14 instant messaging client has been launched, supporting networks such as XMPP, Bonjour, Gadu-Gadu, ICQ, IRC, and Novell GroupWise. The graphical interface of Pidgin is built using the GTK+ library and supports features like a unified address book, simultaneous operation on multiple networks, and a tab-based interface […]
The FreeBSD project has announced the adoption of a new Code of Conduct, based on the LLVM project's code. In 2018, a survey regarding the code was conducted among developers. At that time, 94% of developers considered maintaining respectful communication to be important, 89% believed that FreeBSD should welcome participation from individuals of any worldview (2% opposed), and 74% felt it necessary to remove […]
Two years ago, I already made a post about a simple failover for the okerr website. Now there has been some development of the project, and I also published the source code of the okerr server part under an open license, so I decided to write this small overview on Habr. [ full size ] Who might be interested This may be of interest to you if you […]
In this article, I want to show how easy and free it is to create a failover scheme for a website (or any other internet service) using a combination of Okerr monitoring and a dynamic DNS service. That is, in case of any issues with the main site (ranging from a "PHP Error" on the page to lack of space or a suspiciously low number of orders […]
Netflix is the market leader in internet television, a company that has created and actively developed this segment. Netflix is known not only for its extensive catalog of films and series available from almost any corner of the planet and on any device with a display, but also for its reliable infrastructure and unique engineering culture. A clear example of Netflix's approach to developing and supporting complex systems was presented at DevOops 2019 […]
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