Find an ip.
Chrome user: Goto http://switchy.samabox.com/ . Install switchy. Then configure new profile like the image below with the ip you found first step.
Click on switchy ico and click on your created profile name.
Firefox user goto. Proxytool . after installing proxy tool you will find a blank space on status bar. enter the ip with port that you got from the first step. like: 18.104.22.168:8080.