@alzhao, thanks, my bad. I did that before, but did not realize there were multiple pages until I saw the doc. I have successfully installed ss. In the past there were other apps such as ChinaDNS, Redsock5 etc. to prevent DNS hijacking or poisoning, now I cannot find these apps anymore. I want to use this solution for the GFW when I travel to China, can you point me to the right direction?