Разработка системы для вещания потокового контента с использованием P2P-технологий
The theme of this work is the development of a system for the transmission of streaming content using p2p-technologies. The advantage of the system being developed is the reduction of the load on the centralized nodes of the system and the maintenance of the maximum distribution of tasks between the nodes in the system.
Huge computer networks composed of infected machines so called botnets are currently the one of the most dangerous threats for global society. Botnets are a brilliant tool for organizing distributed denial of service attacks, sending spam and phishing email, stealing sensitive information and money from various accounts. Hackers create botnets from any kind of electronic devices connected to the Internet. The most widely used devices are: personal computers with windows operating system, smartphones with Android OS, IoT devices with public IP addresses and open vulnerabilities (IPTV cameras, for example). There are a lot of options for botnet hiring on the darknet. It is possible to hire a botnet, buy a builder kit or any other service in hacker-to-hacker manner. The easiest way to build a botnet is a creation of central server for spreading commands and creation of clients (bots) that will connect to this server. Such botnets are so called traditional botnets. Traditional botnets with centralized command and control mechanism are vulnerable to the wide range of attacks. For example, if one particular bot is captured by the security analyst the IP address of command and control server will be compromised with very high probability. Without central command and control server botnet is useless because the malefactor is unable to spread commands over infected network. In order to make botnets more robust and steady the peer-to-peer botnet architecture was introduced. P2P architectures could be divided on 3 main categories: pure, moderated and hybrid. The aim of the current papers is covering peer to peer botnets and its architecture.
This work studies the possibility of using a widely adopted peer-to-peer (P2P) data transmission protocol named BitTorrent for the purpose of building a data storage and distribution system that would allow numerous institutions to access vast unstructured volumes of scientic data. We discuss the practical efficiency of using this technology depending on the typical file sizes and readily available software, the ratio of read and write operations, computational power available at the tracker server, the number of mirrors and simultaneously connected clients.
This volume presents new results in the study and optimization of information transmission models in telecommunication networks using different approaches, mainly based on theiries of queueing systems and queueing networks .
The paper provides a number of proposed draft operational guidelines for technology measurement and includes a number of tentative technology definitions to be used for statistical purposes, principles for identification and classification of potentially growing technology areas, suggestions on the survey strategies and indicators. These are the key components of an internationally harmonized framework for collecting and interpreting technology data that would need to be further developed through a broader consultation process. A summary of definitions of technology already available in OECD manuals and the stocktaking results are provided in the Annex section.