Author: Yuri Gagarin

SD-WAN and DNA to assist admins: architectural features and practice

A stand that you can touch in our lab if you wish. SD-WAN and SD-Access are two different new proprietary approaches to building networks. In the future, they are expected to merge into a single overlay network, but for now, they are just coming closer. The logic is this: take a network from the 1990s and layer on all the necessary patches and features without waiting for this to happen […]

1. Elastic stack: analyzing security logs. Introduction

With the cessation of sales of the logging and analytics system Splunk in Russia, the question arose as to what to replace this solution with. After spending time reviewing various options, I settled on a solution for real men—the 'ELK stack.' This system requires time for setup, but it results in a very powerful system for analyzing performance and operations […]

Using similar Unicode characters to bypass authentication

GitHub was subjected to an attack that allowed account access through manipulation of Unicode characters in emails. The issue arises because some Unicode characters, when using case transformation functions, are translated into ordinary characters that are visually similar (when several different characters are translated into one character—for example, the Turkish character 'ı' and 'i' […]

New Cygwin version 3.1.0, GNU environment for Windows

After ten months of development, Red Hat has released the stable version of the Cygwin package 3.1.0, which includes a DLL library for emulating the basic Linux API on Windows, allowing for Linux programs to be compiled with minimal changes. The package also includes standard Unix utilities, server applications, compilers, libraries, and header files compiled directly for execution on Windows. Key changes: In compatibility mode […]

The rdesktop project requires a new maintainer.

rdesktop is an open-source UNIX client designed for connecting to Windows remote desktop services. The only maintainer of the project recently has been the company Cendio, as rdesktop was a key component of their commercial product. However, the company decided to focus on Linux desktops, making the support for rdesktop unnecessary for them. An announcement was made seeking […]

52 datasets for training projects

Mall Customers Dataset — data on store visitors: id, gender, age, income, spending rating. (Use case: Customer Segmentation Project with Machine Learning) Iris Dataset — a beginner dataset containing the sizes of sepals and petals for various flowers. MNIST Dataset — a dataset of handwritten digits. 60,000 training images and 10,000 test images. The Boston Housing Dataset — […]

My solution is the best

Hi, Habr! I would like to present to you a translation of the article "My solution is the best!" by John Hotterbeekx. Recently, I watched a speaker's presentation on architecture. The discussion was engaging, the concept and idea definitely made sense, but the speaker was not likable. What happened? More than half of the presentation was excellent, it included relevant examples, and the audience could see that the speaker clearly knew […]

Writing our own capped expirationd module for Tarantool

Some time ago, we faced the issue of cleaning tuples in Tarantool spaces. The cleaning needed to be initiated not when Tarantool was already running out of memory, but in advance and with a certain frequency. For this task, Tarantool has a module written in Lua called expirationd. After a short period of using this module, we realized it was not suitable for us: […]

Microsoft has brought visual search Bing to the Windows desktop

The Bing search engine, like many of its counterparts, can recognize objects in photos and search for data based on them. Now, Microsoft has transferred the image search functionality to the Windows desktop as well. This innovation allows you to save time by not having to upload photos to the service through a browser, but to work directly. It is noted that the feature is available in the 'Photos' app and the […]

[Animation] Tech brands are taking over the world.

Creating a global brand that is sustainable and competitive is no easy task. The activities of IT corporations are leading to a rethinking of the very concept of 'competitive advantage'. By quickly responding to consumer demands and leveraging brand power, these companies continuously create scalable solutions to emerging challenges. The animation below shows the most valuable brands in 2019 compared to 2001, according to the annual ranking of 'The Best Global […]

The Dangers of Hacker Attacks on IoT Devices: Real Stories

The infrastructure of a modern metropolis is built on Internet of Things devices: from cameras on the roads to large hydropower plants and hospitals. Hackers can turn any connected device into a bot and further use it to carry out DDoS attacks. The motives can vary widely: hackers may be paid by governments or corporations, or sometimes it's just criminals looking to have fun and make money. In […]

Are cushions needed in the data center?

Cats in the Data Center. Who's in favor? Do you think there are cushions in today's data centers? We answer: yes, and plenty! And they're not just for tired engineers and technicians, or even a cat (though where would a cat come from in a data center, right?). These cushions are responsible for fire safety in the building. Cloud4Y explains that […]

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