Administration Section
Hackers exploited a feature of the OpenPGP protocol, known for over a decade. We explain what it is and why it can't be fixed. / Unsplash / Chunlea Ju Network Issues In mid-June, unknown parties launched an attack on the SKS Keyserver network of cryptographic key servers, built on the OpenPGP protocol. This is an IETF standard (RFC 4880) that is used […]
System administrators around the world, congratulations on your professional holiday! We have no system administrators left (well, almost). However, the legends about them are still fresh. In honor of the holiday, we have prepared this epic. Make yourself comfortable, dear readers. Once upon a time, the world of Dodo IS was on fire. In those dark times, the main task of our system administrators was to survive […]
Happy holidays to all involved! We wish you a stable connection and alarm-free nights! We couldn't do it without you, and now we'll show you why 😉 P.S. We're giving a special prize to the first person who finds the frame with the tambourine in the video. Comment with the second it appeared, and we'll get in touch with you. Source: habr.com
Alexander Baranov works at Veeam as the R&D Director and lives between two countries. He spends half his time in Prague and the other half in St. Petersburg. These cities host the largest Veeam development offices. In 2006, it was a startup by two entrepreneurs from Russia related to backup software for virtual machines (hence the name […]
TL;DR: I'm impressed with Haiku, but there's room for improvement. Yesterday I explored Haiku — an operating system that pleasantly surprised me. Day two. Understand this correctly: I am still amazed at how easily it accomplishes tasks that are challenging in Linux work environments. I am eager to learn how it works and enthusiastic about using it daily. The truth is, […]
Despite the widespread acknowledgment of the importance and necessity of testing software, and the fact that many people have long been doing it automatically, there has not been a single recipe found on Habr for setting up the integration of popular tools in this niche, such as our beloved GitLab and JUnit. Let's fill this gap! Introduction To start, let me outline the context: As all of our […]
Continuing the series of articles dedicated to custom implementations of Windows command-line utilities, we cannot overlook TFTP (Trivial File Transfer Protocol) — a simple file transfer protocol. As in the past, we'll briefly cover the theory, look at the code that implements functionality similar to what is needed, and analyze it. More details are below. I won't copy-paste reference information, links to which can traditionally be […]
While part of the software is heading towards total simplification and some strange design transformations, the IT infrastructure of companies is becoming more complex and convoluted. If you're itching to argue with this, you've probably never configured Cisco routers, dealt with DevOps, have no connection to monitoring and print management, and still think that an admin is just a cat, a shredder, […]
The celebration is on Friday, dedicated to admins, and it's their day. With contests, games, and fun activities. Just like it was 8 years ago. Preparations for Admin Day 2011 started several months earlier. I received such a letter: Dear ADMINISTRATORS! The 'System Administrator Day' is approaching! Preparations for the third IT festival ADMINFEST have begun. Traditionally, the IT festival will take place in Rostov-on-Don […]
The article translation is prepared for students of the 'Linux Security' course. Interested in developing in this area? Watch the recording of Ivan Piskunov's master class 'Linux Security Compared to Windows and MacOS.' In this article, I will outline the steps for configuring a DNS server on RHEL 7 or CentOS 7. For demonstration purposes, I used Red Hat Enterprise Linux 7.4. Our goal […]
Simple passwords offer no protection, while complex ones are nearly impossible to remember. That's why they often end up on a sticky note under the keyboard or on the monitor. To keep passwords in the minds of forgetful users without compromising security, two-factor authentication (2FA) is essential. By combining ownership of a device with knowledge of its PIN, the PIN itself can be simpler and easier to remember. […]
Companies often face the need to install new, more powerful equipment in existing facilities. Sometimes this task can be challenging, but there are several standard approaches that help accomplish it. We will discuss these using the example of the Mediatek data center. MediaTek, a globally recognized microelectronics manufacturer, decided to build a new data processing center at its headquarters. As usual, the project […]