Administration Section
Last week, I spent developing my first public program — a Telegram bot that serves as a Bitcoin wallet, allowing users to 'tip' other participants in group chats and make external Bitcoin payments for themselves or others, known as 'Lightning Apps.' I assume that, in general, the reader is familiar with Bitcoin and Telegram, as I will strive to keep my writing concise without diving into details. […]
We have long been interested in the topic of anonymity in cryptocurrencies and strive to keep up with the technological developments in this area. In our articles, we have already explored the principles of confidential transactions in Monero in detail and conducted a comparative review of existing technologies in this field. However, all anonymous cryptocurrencies today are built on the data model proposed by Bitcoin — […]
We continue our series on the structure of the Monero blockchain, and today's article will focus on the RingCT (Ring Confidential Transactions) protocol, which introduces confidential transactions and new ring signatures. Unfortunately, there is little information available online about how it works, and we have tried to fill this gap. We will discuss how this protocol allows the network to conceal […]
Hello again! The title of the article speaks for itself. In anticipation of the start of the 'Data Engineer' course, we offer to delve into who data engineers really are. The article contains many useful links. Enjoy reading. A simple guide on how to catch the wave of Data Engineering and not let it pull you into the depths. It seems that nowadays everyone […]
We continue our series of articles on Cisco Hyperflex. This time, we will introduce you to the operation of Cisco Hyperflex in high-load Oracle and Microsoft SQL database environments and compare the results with competing solutions. Additionally, we continue to showcase Hyperflex capabilities in regions of our country and are pleased to invite you to attend our upcoming demonstrations of the solution, which will be […]
There is an opinion that multifunctional systems are weak. Indeed, this statement seems logical: the more interconnected and interdependent nodes there are, the higher the likelihood that if one of them fails, the whole system will lose its advantages. We have all encountered such situations multiple times with office equipment, cars, and gadgets. However, in the case of software […]
Regional internet registries and their service areas. The described scam occurred in the ARIN region. In the early days of the Internet, IPv4 addresses were handed out to anyone interested in large subnets. But today, companies are lining up at regional registrars to acquire even a small address space. On the black market, one IP costs between $13 and $25, which is why registrars are fighting against many shadow brokers, […]
Greetings, friends! Finally, we have arrived at the last, concluding lesson of Check Point Getting Started. Today we will discuss a very important topic — Licensing. I must warn you that this lesson is not a comprehensive guide to selecting hardware or licenses. It is merely a brief summary of the key points that any Check Point administrator should know. If you are truly puzzled about the choice […]
Windows Terminal is a new, modern, fast, efficient, powerful, and high-performance terminal application for users of command line tools and shells such as Command Prompt, PowerShell, and WSL. Windows Terminal will be available through the Microsoft Store in Windows 10 and will receive regular updates, ensuring that you always stay current and can use the latest […]
Some Bash options are well-known and commonly used. For example, many start their scripts with set -o xtrace for debugging, set -o errexit to exit on error, or set -o errunset to exit if a referenced variable is unset. However, there are many other options. Sometimes they are described too ambiguously in the manuals, so I've compiled some of […]
FHRP (First Hop Redundancy Protocol) is a family of protocols designed to create redundancy for the default gateway. The common idea for these protocols is to combine multiple routers into a single virtual router with a shared IP address. This IP address will be assigned to hosts as the default gateway address. An open implementation of this idea is the VRRP (Virtual Router Redundancy Protocol). […]
Hello, community! On May 18, a meet-up of network operators from the 'Medium' network took place in Tsaritsyno Park in Moscow. This article provides a transcript from the event: we discussed the long-term development plans for the 'Medium' network, the need to use HTTPS for eepsites when using the 'Medium' network, the deployment of a social network within the I2P network, and much more. The most interesting details are below. 1) […]