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Cable television networks for the youngest. Part 8: Optical backbone network

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For many years, optical media has been the basis for data transmission. It is hard to imagine a reader unfamiliar with these technologies, however, it is impossible to proceed in my series of articles without at least a brief description. Contents of the series of articles: Part 1: General architecture of the CATV network Part 2: Composition and form of the signal Part 3: Analog component of the signal Part 4: Digital component of the signal […]

Release of Wine 4.10 and Proton 4.2-6

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An experimental release of the open implementation of the Win32 API — Wine 4.10 is now available. Since the release of version 4.9, 44 bug reports have been closed and 431 changes have been made. The most significant changes include: More than a hundred DLLs are configured by default with the built-in msvcrt library (provided by the Wine project, and the DLLs from Windows) in the PE (Portable Executable) format; Expanded support for PnP (Plug […]

3CX Support replies: capturing SIP traffic on an IP PBX server

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In this article, we will discuss the basics of capturing and analyzing SIP traffic generated by the 3CX phone system. The article is aimed at novice system administrators or regular users whose responsibilities include managing telephony. For a deeper dive into the topic, we recommend taking the Advanced 3CX training course. 3CX V16 allows for SIP traffic capture directly through the server's web interface and saves it in the standard Wireshark PCAP format. […]

Audio over Bluetooth: a detailed look at profiles, codecs, and devices

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Due to the widespread release of smartphones without a 3.5 mm audio jack, wireless Bluetooth headphones have become the primary way for many to listen to music and communicate in headset mode. Manufacturers of wireless devices do not always provide detailed product specifications, and articles about Bluetooth audio on the internet are often contradictory, at times incorrect, fail to cover all features, and frequently replicate the same inaccurate information […]

The distribution for the corporate sector ROSA Enterprise Desktop X4 has been released.

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ROSA has introduced the ROSA Enterprise Desktop X4 distribution, aimed at corporate use and based on the ROSA Desktop Fresh 2016.1 platform with the KDE4 desktop. The focus during the preparation of the distribution is on stability, including only tested components that have been vetted by users of ROSA Desktop Fresh. Installation ISO images are not publicly available and are provided […]

Release of the music creation package LMMS 1.2.

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After four and a half years of development, the free project LMMS 1.2 has been released, providing a cross-platform alternative to commercial music production software like FL Studio and GarageBand. The project is coded in C++ (with a Qt interface) and is distributed under the GPLv2 license. Ready-made builds are available for Linux (in AppImage format), macOS, and Windows. The program […]

Vulnerabilities in HSM modules that could lead to attacks on encryption keys.

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A group of researchers from Ledger, a company that produces hardware wallets for cryptocurrency, has discovered several vulnerabilities in Hardware Security Module (HSM) devices that could be exploited to extract keys or conduct remote attacks to tamper with HSM device firmware. Currently, the report on this issue is only available in French, with an English version planned for publication in August during the Blackhat conference […]

The success of a social experiment with a fake exploit for nginx

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Note from the translator: The author of the original note, published on June 1, decided to conduct an experiment among those interested in information security. For this, he prepared a fake exploit for an undisclosed vulnerability in a web server and posted it on his Twitter. His assumptions — to be instantly exposed by specialists who would see the obvious deception in the code — not only did not come true… They exceeded all expectations, […]

High-level replication in Tarantool DBMS

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Hello, I am engaged in creating applications for the Tarantool DBMS — a platform developed by Mail.ru Group that combines a high-performance DBMS with an application server in Lua. The high speed of solutions based on Tarantool is achieved in part due to support for in-memory mode of the DBMS and the capability to execute application business logic in the same address space as the data. Meanwhile, […]

Comodo revokes certificates without cause

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Could you have imagined that a large company would engage in deceiving its customers, especially if that company positions itself as a guarantor of security? I certainly couldn't until recently. This article serves as a warning to think twice before buying a code signing certificate from Comodo. In my professional capacity (system administration) […]

What is known about ITIL 4 certification

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This year saw the release of the ITIL 4 update. We explain how certification for specialists in IT service management will proceed under the new standard. / Unsplash / Helloquence How the certification process is changing The last update for the ITIL 3 library was presented eight years ago. During this time, the IT industry has undergone significant changes and has 'acquired' new technologies. Many companies have started implementing practices […]

Blender's stance on the free nature of the project and paid GPL add-ons

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Ton Roosendaal, the creator of the 3D modeling system Blender, has published an assurance that Blender has always been and will always be a free project, distributed under the copyleft GPL license and available without restrictions for any use, including commercial applications. Ton emphasized that all Blender developers and those creating plugins that utilize the internal API must open their code.

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