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Tor updates 0.3.5.10, 0.4.1.9, and 0.4.2.7 with DoS vulnerability fixes

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Corrective releases of the Tor toolkit (0.3.5.10, 0.4.1.9, 0.4.2.7, 0.4.3.3-alpha) have been presented, used for enabling the operation of the anonymous Tor network. The new versions fix two vulnerabilities: CVE-2020-10592, which can be exploited by any attacker to initiate a denial of service on relays. The attack can also be executed from Tor directory servers targeting clients and hidden services. An attacker can create […]

Java SE 14 Release

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Java SE 14 was released on March 17. The following changes were introduced: Switch expressions have been added in the form of case VALUE -> {}, which exit the default condition and do not require a break statement. Text blocks, defined by triple quotes «»», have reached the second preview stage. Control sequences have been added, which do not add […] before the newline.

Beta version of Devuan 3 Beowulf released

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On March 15, the beta version of the Devuan 3 Beowulf distribution was released, which is based on Debian 10 Buster. Devuan is a fork of Debian GNU/Linux without systemd that "gives users control over their system by avoiding unnecessary complexity and ensuring freedom of choice of the initialization system." Changes include: the behavior of su has been altered. The default invocation now does not change the PATH variable. The old behavior now requires […]

When Linux conntrack is no longer your friend

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Connection tracking (“conntrack”) is a core feature of the Linux kernel's networking stack. It allows the kernel to track all logical network connections or flows and thus identify all packets that constitute each flow, so they can be processed sequentially together. Conntrack is an important kernel feature used in several key cases: NAT relies on information from conntrack […]

Simple hash table for GPU

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I uploaded a new project to Github: A Simple GPU Hash Table. This is a simple hash table for GPU that can handle hundreds of millions of insertions per second. On my laptop with an NVIDIA GTX 1060, the code inserts 64 million randomly generated key-value pairs in about 210 ms and removes 32 million pairs in about 64 ms. So, the speed is around […]

Free Proxy Server for Enterprises with Domain Authentication

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pfSense + Squid with HTTPS filtering + Single Sign-On (SSO) technology with filtering by Active Directory groups. Background: There was a need in the company to implement a proxy server with the ability to filter access to websites (including HTTPS) by AD groups so that users wouldn’t need to enter any additional passwords, and administration could be done via a web interface. Quite a request, isn't it? […]

Magnetic core memory in the Saturn V rocket

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The computer that operated in the launch vehicle (Launch Vehicle Digital Computer, LVDC) played a key role in the Apollo lunar program, controlling the Saturn V rocket. Like most computers of that time, it stored data in tiny magnetic cores. In this article, Cloud4Y discusses the LVDC memory module from Steve Jurvetson's luxurious collection. This memory module was enhanced in the mid-1960s […]

OpenID Connect: Authorizing Internal Applications from Custom to Standard

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A few months ago, I was working on the implementation of an OpenID Connect server to manage access to hundreds of our internal applications. We transitioned from our own developments, which were convenient on smaller scales, to a widely accepted standard. Access through a centralized service significantly simplifies monotonous operations, reduces authorization implementation costs, allows for finding many ready-made solutions, and avoids headaches when developing new ones. In this […]

Beta release of the Devuan 3 distribution, a fork of Debian without systemd

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The first beta release of the Devuan 3.0 "Beowulf" distribution, a fork of Debian GNU/Linux that is provided without the system manager systemd, has been formed. The new branch is notable for its transition to the Debian 10 "Buster" package base. Live builds and installation ISO images have been prepared for AMD64 and i386 architectures. Devuan-specific packages can be downloaded from the repository packages.devuan.org. The project has created forks for 381 Debian packages, […]

GitHub has released mobile applications for development.

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After four months of beta testing, GitHub announced the stabilization of mobile applications for iOS and Android, allowing the use of smartphones or tablets for participation in development. The apps enable tracking project status, viewing code, resolving issues, reviewing pull requests, and merging changes. Source: opennet.ru

Java SE 14 Release

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After six months of development, Oracle has released the Java SE 14 platform (Java Platform, Standard Edition 14), with the open source project OpenJDK serving as the reference implementation. Java SE 14 maintains backward compatibility with previous Java platform releases, ensuring that all previously written Java projects will run without changes on the new version. Installable builds are ready […]

Not so Common Desktop Environment (NsCDE) — a desktop environment styled like CDE

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As the saying goes, GNU/Linux is great because it allows you to set up a familiar interface reminiscent of Windows, or you can create something unusual and unconventional. For retro enthusiasts, there’s good news — making your computer resemble the good old warm vacuum tube computers from the early 90s has become even easier. Not so Common Desktop Environment, or abbreviated as […]

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