Chromium has a proxy setting page, but brings you to your distro proxy configuration panel. In my case the Ubuntu system settings.
![chromium-proxy-settings.png](http://blog.mx17.net/wp-content/uploads/2012/08/chromium-proxy-settings.png.png)
If you need to set an internet proxy only for Chromium, you can start it with a special command line parameter:
chromium-browser --proxy-server=http://192.168.43.1:8080