I am installing internet access on an small hotel. Right now the connection is wireless an every guest on the hotel can take the internet signal and use the internet browser, email, messenger, etc.
My problem is that all guests can see the other guests, I mean if they click on entire network they can see all pc´s connected and this is not correct. so do you have an idea to resolve this? The guest should be able to use internet explorer, email, etc, but the guest have no have the option to see the other pcs.

Thanks in advance

I don't know how the advanced stuff does it, but my little Linksys wireless router has an option to isolate the connection to the Access Point, meaning users can not see other users, just access the gateway (and ultimately the internet).

Thanks for the answer but the problem is that I am not using linksys o cysco hardware I am using the wireless by powerline so this is why I have to try to find a software solution

In the short-term, you could tell people to disable file and print sharing until you figure out how to disable it at the network level.