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Network filtering configuration management system Qrator

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TL;DR: A description of the client-server architecture of our internal network configuration management system, QControl. It is based on a two-tier transport protocol, working with gzip-packed messages without decompression between endpoints. Distributed routers and endpoints receive configuration updates, and the protocol allows the installation of localized intermediate relays. The system is built on the principle of differential backup (ā€˜recent-stableā€™, explained below) and utilizes a query language […]

Network monitoring and detection of abnormal network activity using Flowmon Networks solutions

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Recently, there has been a plethora of materials online discussing traffic analysis at the network perimeter. However, everyone seems to have forgotten about the analysis of local traffic, which is equally important. This article specifically addresses that topic. Using Flowmon Networks as an example, we will revisit the good old Netflow (and its alternatives) and consider some interesting cases, […]

Mesh VS WiFi: Which One to Choose for Wireless Connectivity?

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When I still lived in an apartment building, I faced the issue of slow speeds in rooms far from the router. Many people have their router in the hallway, where the provider has run fiber or UTP, and where a standard device is also placed. Itā€™s fortunate when the owner replaces the router with their own, but standard devices from providers are like […]

Setting Up NextCloud + ONLYOFFICE on a Single Server Using Docker

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Hello, Habr! I present to you the translation of the article "Setting up NextCloud and ONLYOFFICE on a single server with Docker." Itā€™s difficult to underestimate the benefits of online office application suites like Google Docs and cloud storage for tech-oriented individuals. These technologies have become so widespread that even Microsoft, which has long dominated the office applications market, […]

Infrastructure testing as code with Pulumi. Part 2

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Hello everyone. Today, we share with you the final part of the article "Testing Infrastructure as Code with Pulumi," a translation prepared specifically for the students of the "DevOps Practices and Tools" course. Deployment Testing The tested style is a powerful approach that allows us to conduct white-box testing to examine the inner workings of our infrastructure code. However, it somewhat limits what can be done […]

More website statistics in your small storage

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By analyzing website statistics, we gain insights into what is happening with it. We compare the results with other knowledge about the product or service to enhance our experience. Once the initial analysis is complete, the information is contemplated, and conclusions are drawn, the next phase begins. Ideas arise: what if we look at the data from a different angle? This […]

Wine on Windows 10. It works

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Wine is a program for running Windows applications on Unix-based computers. Running Wine on Windows has been the dream of fans who answer the call of their hearts: 'We do what we must because we are not obligated to do it,' at least since 2004 when someone attempted to compile Wine in Cygwin and broke the host system registry. The justification: 'What about old applications, […]

Introducing 3CX 16 Update 3 Alpha ā€“ enhanced DNS handling and reconnection for mobile clients.

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Even though it's August, we are not taking it easy and continue to prepare for the new business season. Introducing 3CX v16 Update 3 Alpha! This release adds automatic configuration of SIP trunks based on information received from DNS, automatic reconnection of mobile clients for Android and iOS, audio recognition, and drag-and-drop of attachments into the web client chat window. The new release features […]

Case study on communication with a 'difficult' client

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At times, a technical support engineer faces a tough choice: to adopt a dialogue model of 'We are committed to high service culture!' or 'Click the button ā€” get the result'? ...With a wing made of cotton broken, We'll lie in the clouds like in tombs. We poets are rarely saints, We poets are often blind. (Oleg Ladyzhensky) Working in Technical Support is not just about funny stories about self-jumping […]

The QUIC protocol in action: how Uber implemented it to optimize performance

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The QUIC protocol is fascinating to observe, which is why we enjoy writing about it. However, while previous publications about QUIC had more of a historical (regional, if you will) nature and technical substance, today we are pleased to publish a different type of translation ā€“ it will focus on the real application of the protocol in 2019. Moreover, we won't be discussing small infrastructure based in a hypothetical garage […]

Everything you wanted to know about the decentralized Internet provider "Medium" but were afraid to ask

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Good day, Community! My name is Yanislav Basyuk. I am the coordinator of the public organization "Medium." In this article, I have attempted to gather the most comprehensive information about what this decentralized internet provider operates within the Russian Federation. I will cover: what "Medium" represents, what Yggdrasil is and why "Medium" uses it as the main transport, how […]

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