阿里雲配置shadowsocks需要特別注意的一點：

需要去控制檯去配置安全組規則，以允許shadowsocks對應的埠。否則shadowsocks服務依舊不可用。

如何允許埠？

Employ multiple ports on ssserver

{
  "server": "0.0.0.0",
  "port_password":{
     "8989":"the_password_for_this_port",
     "8990":"the_password_for_this_port",
     "8991":"the_password_for_this_port",
     "8992
 
":"the_password_for_this_port",
     "8993":"the_password_for_this_port",
     "8994":"the_password_for_this_port",
     "8995":"the_password_for_this_port"
     },
  "timeout": 500,
  "method": "rc4-md5"
}

# foreground
$ ssserver -c ssserver.conft

# To run in the background:
ssserver -c /etc/shadowsocks.json -d
 
 start
ssserver -c /etc/shadowsocks.json -d stop

reference