FIREFOX

root@oco:~$ BROWSER > about:profiles
 Profile Name: {WST-PROXY}

root@oco:~$ BROWSER > Settings > General > Network Settings > 
 Connection > Settings
  Proxy: Manual proxy configuration
  HTTP Proxy: 127.0.0.1
  Port: 8080
  Use this proxy server for all protocols: Enabled
  No Proxy for: No Entry