A Technical Look at Iran’s Internet Shutdowns

This blog post examines how Iran's National Information Network (NIN) enables the country to maintain limited internet connectivity during shutdowns, focusing on its design for selective blackouts and internal traffic management. It also discusses tools such as Pingtunnel and Starlink for bypassing censorship, as well as the benefits of self-hosted encrypted services like Matrix for secure communication within Iran. The post highlights the vulnerabilities in Iran's filtering system and explores adaptive strategies for users to stay connected despite severe restrictions.