The National Information Network (NIN) is an internet infrastructure developed and controlled by the Iranian government. Its primary purpose is to provide a domestic network that operates independently from the global internet. The NIN enables the government to monitor, filter, and restrict online activities, ensuring tighter control over information flow and access within Iran. It supports local services and websites while limiting access to foreign content, thereby enhancing cybersecurity from the government's perspective but raising concerns about censorship and surveillance. The NIN is a key component of Iran's strategy to safeguard national digital sovereignty and manage cyber threats.