Understanding Psiphon: Circumventing Internet Censorship Through Proxy Tunnels
Psiphon is an advanced tool designed to bypass internet censorship by routing users’ traffic through a network of proxy servers, allowing access to restricted content. The tool operates by creating a secure tunnel to a proxy server beyond the reach of censorship mechanisms, enabling users to freely browse the internet. Psiphon supports various routing modes, including Port Forward Mode, which acts as a local SOCKS and HTTPS proxy, and Packet Tunnel Mode, where IP packets are relayed through a virtual device to the proxy server. Its core security feature is an SSH connection, ensuring data confidentiality and integrity. Psiphon also employs a system for managing server entries, using obfuscated server lists and encryption to prevent detection. To evade censorship, Psiphon utilizes traffic obfuscation techniques such as randomized traffic, protocol mimicry, and indirect connections. The tool optimizes performance by making multiple simultaneous connection attempts with different configurations, ensuring efficient circumvention of censorship. Psiphon offers a reliable and secure method for users to access the open web, regardless of restrictions.
