I'm going to be away for a few days and will be taking both my Macbook Air and my iPad away with me.
Whilst we're stuck in a hotel room I may not have internet connection (I'm not willing to pay for hotel wifi) but would like to be able to share the iTunes library between my iPad / iPhone / Air
Without being connected to a router can I do this? Can the Air host its own private network just for local devices?
Best Answer
There are a couple of ways of acheiving this:
Adhoc, peer to peer, computer to computer
You can create a peer to peer wireless network between devices that does not require an Access point or other routing device. This is usually known as creating an ad-hoc wireless network, or a computer to computer one, rather than an infrastructure one.
I currently only have access to a machine with Mountain Lion on, and things appear different (this method is unavailable), but in Lion or earlier you should be able to:
Any devices connected this network should only be able to communicate with other devices on the network, no routing or other traffic is available.
Internet Sharing
Another option is to use Internet Sharing. On the off chance that you have free or cheap hotel internet:
Now any machine connected to the same wifi network can route through the ethernet or dongle connection on the air. If you have no connection available through those connection, then the same peer to peer communications should be available still.