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What range does this antenna cover? Measuring antenna characteristics

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— What frequency range does this antenna cover? — I don’t know, check it. — HOW?!?! How do you determine what antenna you have in your hands if it has no markings? How can you figure out which antenna is better or worse? This problem has been bothering me for a long time. This article explains in simple terms the methodology for measuring antenna characteristics and how to determine the frequency range of an antenna. Experienced radio engineers […]

Using Zabbix to Monitor MS SQL Server Database

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Foreword Often there is a need to inform the administrator in real time about problems related to the database (DB). This article will describe what needs to be configured in Zabbix to monitor the MS SQL Server database. I would like to note that a detailed setup guide will not be provided, but formulas and general recommendations, as well as detailed descriptions will be included […]

Mikroik. IPSEC vpn over NAT as a client

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Good day to everyone! It so happened that in our company we have been gradually transitioning to MikroTik devices over the past two years. The main nodes are built on CCR1072, while local connection points for computers are on simpler devices. Naturally, there is also an IPSEC tunnel network merging, and in this case, the configuration is quite simple and not troublesome, especially since there is […]

Microsoft Edge will get a built-in translator

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The recently released Microsoft Edge browser based on Chromium will have its own built-in translator that can automatically translate web pages into other languages. Reddit users discovered that Microsoft quietly enabled this new feature in Edge Canary. It moves the Microsoft Translator icon directly into the address bar. Now, whenever the browser loads a website in a language different from the one set in the system, […]

Hackers have published the personal data of thousands of U.S. police officers and FBI agents.

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The TechCrunch resource reported that a hacking group breached several websites associated with the FBI and uploaded their content to the Internet, including dozens of files containing personal data of thousands of federal agents and law enforcement personnel. The hackers compromised three sites linked to the FBI National Academy Association, a union of various departments across the U.S. promoting training and guidance for agents and […]

Release of GhostBSD 19.04

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The release of the desktop-oriented distribution GhostBSD 19.04 has taken place, built on the basis of TrueOS and offering the MATE desktop environment. By default, GhostBSD uses the OpenRC initialization system and the ZFS file system. Both live mode operation and installation on a hard drive are supported (it uses a custom installer, ginstall, written in Python). Boot images are created for the amd64 architecture (2.7 GB). In […]

The unique 14-core Core i9-9990XE processor is now available for €2999.

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Earlier this year, Intel unveiled one of its most unusual and expensive desktop processors — the Core i9-9990XE. Remarkable features are not the only thing that makes this model standout; its distribution method is unusual as well: Intel sells this processor at closed auctions to a select group of desktop PC manufacturers. However, the well-known store CaseKing.de has decided to offer the Core i9-9990XE […]

Ray tracing has arrived on GeForce GTX: you can see for yourself.

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Starting today, real-time ray tracing is supported not only by GeForce RTX graphics cards but also by some GeForce GTX 16xx and 10xx cards. The GeForce Game Ready 425.31 WHQL driver, which enables this feature for the graphics cards, can now be downloaded from NVIDIA's official site or updated through the GeForce Now application. A list of graphics cards supporting real-time ray tracing […]

Dragonblood: the first vulnerabilities in Wi-Fi WPA3 have been identified.

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In October 2017, it unexpectedly became clear that there was a serious vulnerability in the Wi-Fi Protected Access II (WPA2) protocol for encrypting Wi-Fi traffic, which allows users' passwords to be revealed and subsequently enables eavesdropping on the victim's data exchange. The vulnerability, named KRACK (short for Key Reinstallation Attack), was discovered by experts Mathy Vanhoef and Eyal Ronen. After discovery […]

Queues and JMeter: Interaction with Publisher and Subscriber

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Hello, Habr! This is a sequel to my previous publication where I will discuss options for queuing messages using JMeter. We are building a data bus for a large federal company. Various request formats, transformations, intricate routing. For testing, we need to send a lot of messages to the queues. Doing it manually is a pain that not every manual tester can handle. Introduction Although this pain […]

Teasers for the new Bentley Flying Spur have been published.

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A teaser image of the Flying Spur sedan has surfaced online. If you like the Bentley Continental GT, you'll likely appreciate this new model, as its outlines resemble a coupe transformed into something more massive. As in previous years, the Flying Spur features more streamlined shapes compared to the flagship Mulsanne sedan. It can be assumed that the car in question will receive plenty of […]

IBM MQ and JMeter: First Encounter

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Hello, Habr! This is a prequel to my previous publication and at the same time a remake of the article Automated Testing of Services Using the MQ Protocol with JMeter. This time I will share my experience in reconciling JMeter and IBM MQ for effective application testing on IBM WAS. I faced such a task, and it was not easily solved. I want to help save time for everyone […]

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