Shadowsocks is an open-source encrypted proxy project, widely used in mainland China to circumvent Internet censorship. Usage: Shadowsocks accepts JSON format configs like this:
{
"server":"my_server_ip",
"server_port":8388,
"local_port":1080,
"password":"barfoo!",
"timeout":600,
"method":"chacha20-ietf-poly1305"
}
source Wikipedia: