ProHoster > Articles on: Yuri Gagarin

Author: Yuri Gagarin

A technical specialist at ProHoster with over six years of experience in server administration, VPN solutions, and network security. I manage infrastructure setup and support, monitor service stability, and implement solutions to protect client data. I also contribute to performance optimization and compliance with modern security and privacy requirements.

The implementation of DDIO in Intel chips allows for a network attack specifically targeting keystrokes in an SSH session.

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A group of researchers from the Vrije Universiteit Amsterdam and ETH Zurich has developed a network attack technique called NetCAT (Network Cache Attack), which allows remote identification of the keys pressed by a user during an SSH session by applying data analysis methods through side channels. This issue occurs only on servers that utilize RDMA (Remote Direct Memory Access) and DDIO technologies […]

Mozilla is testing the Private Network proxy service for Firefox

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Mozilla has reversed its decision to discontinue the Test Pilot program and introduced new testing functionality — Private Network. Private Network allows users to establish a network connection through an external proxy service operated by Cloudflare. All traffic to the proxy server is transmitted in an encrypted format, enabling the service to provide protection when operating on untrusted networks, […]

KeePass v2.43

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KeePass is a password manager that has been updated to version 2.43. What's new: Added pop-ups for certain character sets in the password generator. Added an option to 'Remember password hiding settings in the main window' (Tools → Options → Advanced tab; option enabled by default). A new intermediate password quality level has been added – yellow. When the URL override field in the dialog […]

Fuel monitoring for diesel generators in data centers – how to do it and why it is so important?

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The quality of the power supply system is a crucial indicator of the service level of a modern data center. This is clear: absolutely all equipment necessary for the operation of the data center relies on electricity. Without it, servers, networks, engineering systems, and storage arrays will cease to function until power is fully restored. We explain the role that diesel fuel and our monitoring system play in ensuring the uninterrupted operation of Linxdatacenter in St. Petersburg […]

Easier than it seems. 20

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By popular demand — the continuation of the book 'Easier than it Seems.' It turns out that almost a year has passed since the last publication. To avoid you having to reread the past chapters, I’ve created this connecting chapter, which continues the plot and helps to quickly recall the summary of previous parts. Sergey lay on the floor, staring at the ceiling. He was planning to spend about five minutes like this, but almost […]

PoE over distances of 200+ meters. Monitoring and automatic restart of PoE clients

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In my experience, powering a device and getting an image from it at a considerable distance from the switch turned out to be quite challenging. Especially when multiple cameras are connected with networks at different distances from a single device. Any moderately complex device tends to hang periodically. Some do so less often, while others more frequently, and this is a given. Most often, this is resolved… right… with this: […]

Ubuntu 19.10 will feature a light theme and faster boot times.

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In the upcoming release of Ubuntu 19.10, scheduled for October 17th, the decision has been made to adopt a light theme closely resembling the default appearance of GNOME, instead of the previously suggested theme with dark headers. A fully dark theme will also be available as an option, featuring a dark background within windows. Additionally, in the fall release of Ubuntu, there will be a transition to the use of […]

The second release of the user-space OOM killer oomd 0.2.0

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The second release of the user-space OOM killer oomd 0.2.0, licensed under GPL-2.0 and written in C++. Release 0.2.0 includes numerous updates and file reorganizations to simplify the oomd package for Linux distributions: https://github.com/facebookincubator/oomd/releases/tag/v0.2.0 RPM for the newly released oomd v0.2.0 is available in this COPR repository: https://copr.fedorainfracloud.org/coprs/filbranden/oomd/ oomd is designed for high-load servers and requires support […]

Archive of physics problems for school Olympiads.

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After many years of working in schools, I have created a database of physics problems for preparing for Olympiads. Problems can be searched by relevant topics, levels, and grades. Then they can be sent for printing, or shared via a link with students. And although I am no longer working in schools, I decided that it would be a shame for the good to go to waste. The site is free of ads and other monetization. If you are a teacher […]

KTT in server solutions. The second version + announcement of the third, with a chance to try it out.

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The continuation of the story about the revolution of innovative cooling systems for server equipment. Photo details of the second version of the cooling system installed in a real server rack at the actual DataPro data center. Additionally, an invitation to touch the third version of our cooling system with your own hands. On September 12, 2019, at the "Data Center 2019" conference in Moscow. Server KTT. Version 2 The main complaint about the first version of the system […]

Don't skimp on digital security

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Almost every day we hear about new hacker attacks and vulnerabilities discovered in popular systems. There's been a lot of talk about how cyberattacks have significantly influenced election outcomes! And not just in Russia. It seems obvious that there is a need to take measures to protect our devices and online accounts. The problem is that […]

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