These tactics don’t work so well on Shadowsocks, since it is a less centralized system. Chinese censors have been able to use machine learning to find “fingerprints” that identify traffic from VPNs using these protocols.
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And VPNs usually rely on one of a few popular internet protocols, which tell computers how to talk to each other over the web. That makes it easy for the government to identify those providers and then block traffic from them. But most people who use them in China use one of a few large service providers. How is this different from a VPN? VPNs also work by rerouting and encrypting data. It creates an encrypted connection between the Shadowsocks client on your local computer and the one running on your proxy server, using an open-source internet protocol called SOCKS5. It still knows you are requesting packets from Google-you’re just using a bit of an odd route for it. Nowadays, even if you have a proxy server in Australia, the Great Firewall can identify and block traffic it doesn’t like from that server. So even if you’re in China, your proxy server in Australia can freely connect to Google, Facebook, and the like.īut the Great Firewall has since grown more powerful. This other computer is called a “proxy server.” When you use a proxy, all your traffic is routed first through the proxy server, which could be located anywhere. Proxying grew popular in China during the early days of the Great Firewall-before it was truly “great.” In this setup, before connecting to the wider internet, you first connect to a computer other than your own. Shadowsocks is based on a technique called proxying. To understand how Shadowsocks works, we’ll have to get a bit into the cyberweeds. While the government has made efforts to curb its spread, it’s likely to remain difficult to suppress. It’s called Shadowsocks, and it’s an open-source proxy built for the specific purpose of jumping China’s Great Firewall. In response to these difficulties, China’s tech-savvy programmers have been relying on another, lesser-known tool to access the open internet.
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