My hosting machine is Ubuntu 13.10 64 bit and my mobile device is Vodafone 875 (Android 4.1.1).

I've done all the recommendations on the [guide](https://developer.mozilla.org/en-US/docs/Tools/Remote_Debugging) but when I try to connect I receive the following message:

**Error: connection timeout.**

I don't know what to do. Can you help me?