(adsbygoogle = window.adsbygoogle || []).push({}); 1. Install SSH on your iDevice.
2. Find your IP address by going into Settings, Wi-Fi and then tap the blue arrow next to the network your iDevice and Ubuntu are on.
3. Turn auto-lock off if you have it on as it will interrupt your SSH session.
4. Now on Ubuntu, click on Places, Connect to Server.

For the settings:

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A warning should come if it's your first time connecting to your iDevice, just click ok.
By default the password is alpine.
And your in!

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Nothing special, this is pretty much like ftp server.