How to create a secured computer-to-computer network in Yosemite?

Actually maybe he didn't have 'full access' and was only on the ad hoc network. I just had another friend try with an iPhone and while he could get on the network we couldn't get the remote app to work...

When he ifinito to follow the explanation of BoBHarris, you will need to check off the square on the left called "Internet Sharing" in order to apply the changes.

This is a video I found on youtube

https://youtu.be/uxKwFK_XJVI?t=6m44s

I'm italian

I'm afraid you guys (and maybe Apple) are not thinking this one through. Consider the real scenario of a musician on stage using an iPad app to communicate with a music app running on a laptop. No files are involved and anyone who could log on to that network would be able to control that music app if the app itself does not support username/password protection - most don't, they're intended to be easy to use.

secure your network so people have difficulty logging on to it.

No security is perfect and there is always some way to circumvent something

but if you can't hide your SSID you can make it a little threatening to the casual user

I don't know exactly to what you are responding but I'm making the point that the argument that a computer-to-computer network does NOT need security is wrong.

any network must be password protected, if this is in WI-Fi.