iChat puts two remote screens into a local window
In addition, all of the Screen Sharing program commands that you can run using Back to My Mac will be disabled: no copy, paste, no adequate conversion / quality, nor can size again.
Troubleshooting . iChat screen-sharing is relatively simple to set up on the Mac, it requires certain ports to be opened on the connection side. That means that at least one partner needs to have an Apple router with NAT-PMP enabled or another company's router with UPnP enabled, as well as an accessible IP address.
Skype
Skype also offers a useful but minimalistic screen sharing option. You can compare all or part of the screen with someone; Other partners can see but cannot control it. This is extremely useful for troubleshooting and demonstration.
The advantage of this method is that you can reach any Skype user; along with other things, it means that it can work between computers running Mac OS X and Windows. And Skype gives you an option to choose which part of the screen the sharer can see.
On the downside, Skype does not allow you to control a remote system, you cannot share multiple screens at the same time and cannot share one screen with multiple partners.
Set up . Before you start, you need a Skype account (free registration) and Skype client (also free). You must have a higher version 2.8 or a version to share the screen; If the system on the other end is using an older version, it may still be able to observe your screen.
After logging in, select a contact in your main Skype window. Then initiate a call or a chat window and select an option from the Share menu, or select Call -> Share Screen , then the option you want to select.
You have the option to share the full screen, choose from a screen, or one of your screens (if there are multiple screens). Choosing to share a screen option will reduce bandwidth and keep other parts of the screen that you don't want to share to be blocked.