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A technical look at Iran's internet shutdowns
Every time mass protests erupt in Iran, a familiar pattern follows: the flow of information stops. The internet slows to a crawl or disappears entirely.
Iran’s National Information Network (NIN) is a state-controlled intranet designed to keep domestic services running even when international connectivity is cut off. This opens up a small but real opportunity: scanning IP space for reachable proxies, VPNs, or relays that haven’t yet been added to blocklists. Sometimes, when the National Information Network (NIN) is up but Iran’s connection to the global internet is completely cut off, you simply can’t reach friends and family outside the country.
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