5 Replies Latest reply: May 4, 2014 11:06 AM by Ralph Johns (UK)
elmerlang Level 1 Level 1 (0 points)

Hi

I just noticed that because of wi-fi (I think), it appears my roomie and I are on a network. His computer also appears under my shared list.

How did that happen? Can't say I like it, especially since I was unaware that it has happened.

 

If I haven't blocked his computer has he had access to anything on mine, or do I have to open up my computer?

 

How can I disable his access (ie end sharing a network, probably not possible since it's internet) or at least lock my computer so no one on the network can have access to anything on my computer?

 

best,

elmer


MacBook Pro, OS X Mavericks (10.9.2)
  • chattphotos Level 4 Level 4 (1,890 points)

    Computers have been designed to discover eachother on local networks. It's harmless.

     

    As long as you have file sharing and screen sharing turned off (System Preferences > Sharing) there's no way your roommate could see what's inside your computer.

  • Drew Reece Level 5 Level 5 (4,720 points)

    chattphotos wrote:

     

    Computers have been designed to discover eachother on local networks. It's harmless.

     

    As long as you have file sharing and screen sharing turned off (System Preferences > Sharing) there's no way your roommate could see what's inside your computer.

    That depends on if your roomate has the password to your user account (or if you have not set a password!).

     

    Other apps have sharing features too. If you have iPhoto sharing active they may be able to view photos etc, other apps also advertise the ports for users to connect to.

     

    This claims to disable the bonjour advertisements…

    http://support.apple.com/kb/HT3789

     

    I don't know if it is still valid for 10.9, but it was updated this April. It doesn't make the Mac any more secure, it simply stops the advertisements - any active sharing services will still accept valid connections, but you will require manual setup (via IP address or hostnames).

     

    It may be a good idea to change your 'computer name' in sharing if you use open wifi a lot. Seeing 'John Smiths macbook pro' on free wifi makes me chuckle.

     

    P.S. Bonjour is a 'local network thing' it shouldn't be visible on the internet (at least without some elaborate network setup).

  • Ralph Johns (UK) Level 9 Level 9 (69,330 points)

    Hi,

     

    Sharing Files.png

     

    File Sharing can be On or Off.

    In Options you can turn On SMB (windows) sharing.

     

    You decide which files/Folders can be Shared  in which Mac User accounts

    (They may have an account on your computer which they might legitimately access)

     

    You can decide on Who has access.

     

    You can also decide if people can Read (open with an App on their Computer) or Write to the File ( Save a new version on your computer).

    If they do have access to Files inside a Folder they may still need Write Permission to the folder as well as the File itself.

     

     

     

    3Sigcopy2.png

    10:17 pm      Saturday; May 3, 2014

     

      iMac 2.5Ghz i5 2011 (Mavericks 10.9)
     G4/1GhzDual MDD (Leopard 10.5.8)
     MacBookPro 2Gb (Snow Leopard 10.6.8)
     Mac OS X (10.6.8),
     Couple of iPhones and an iPad
  • elmerlang Level 1 Level 1 (0 points)

    Thank you all for your info and thanks much, Ralph, for the pic.

  • Ralph Johns (UK) Level 9 Level 9 (69,330 points)

    You're welcome.

     

     

    4thanx.gif for the 1helpful.png  Points

     

     

    3Sigcopy2.png

    7:06 pm      Sunday; May 4, 2014

     

      iMac 2.5Ghz i5 2011 (Mavericks 10.9)
     G4/1GhzDual MDD (Leopard 10.5.8)
     MacBookPro 2Gb (Snow Leopard 10.6.8)
     Mac OS X (10.6.8),
     Couple of iPhones and an iPad