Browsing by Author "Godinho, António"
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- Internet of Things-based care monitoring for the elderly and those with special needsPublication . Godinho, António; Cardoso, Filipe; Coelho, Paulo Jorge; Pires, Ivan MiguelAs a society, we should provide support and care for individuals who are advanced in age or have special needs. We must offer them the opportunity to lead a safe and comfortable life. Sometimes, addressing simple things can mitigate critical problems. For instance, an improperly functioning heating system can put the users’ lives at risk, and a gas leak can prove fatal if not detected in time. Hence, this study aims to identify solutions that can help prevent accidents in such vulnerable populations. To achieve this, a safety device equipped with essential sensors continuously monitors the living environment of people with special needs. If there are any anomalies, the system will immediately alert the concerned family members and competent security authorities, ensuring a quick and efficient response to potential emergencies. The proposed safety device aims to provide extra protection and peace of mind for special care individuals. By implementing such safety measures, we can make significant strides in promoting the well-being and safety of vulnerable populations.
- IoT single board computer to replace a home serverPublication . Godinho, António; Cardoso, Filipe; Rosado, J.; Sá, FilipeHome servers are popular among computer enthusiasts for hosting various applications, including Linux OS with web servers, database solutions, and private cloud services, as well as for VPN, torrent, file-sharing, and streaming. Single Board Computers (SBCs), once used for small projects, have now evolved and can be used to control multiple devices in the IoT space. SBCs have become more powerful and can run many of the same applications as traditional home servers. In light of the energy crisis, this study will examine the feasibility of replacing a conventional home server with an SBC while maintaining service quality and evaluating performance and availability. The power consumption of both solutions will be compared.
- Torrent Poisoning Protection with a Reverse Proxy ServerPublication . Godinho, António; Cardoso, Filipe; Rosado, José; Sá, Filipe; Caldeira, FilipeA Distributed Denial-of-Service attack uses multiple sources operating in concert to attack a network or site. A typical DDoS flood attack on a website targets a web server with multiple valid requests, exhausting the server’s resources. The participants in this attack are usually compromised/infected computers controlled by the attackers. There are several variations of this kind of attack, and torrent index poisoning is one. A Distributed Denial-of-Service (DDoS) attack using torrent poisoning, more specifically using index poisoning, is one of the most effective and disruptive types of attacks. These web flooding attacks originate from BitTorrent-based file-sharing communities, where the participants using the BitTorrent applications cannot detect their involvement. The antivirus and other tools cannot detect the altered torrent file, making the BitTorrent client target the webserver. The use of reverse proxy servers can block this type of request from reaching the web server, preventing the severity and impact on the service of the DDoS. In this paper, we analyze a torrent index poisoning DDoS to a higher education institution, the impact on the network systems and servers, and the mitigation measures implemented.