Discussion in 'macOS' started by djdarlek, Apr 25, 2006.

  1. djdarlek macrumors regular

    Oct 10, 2003
    Hello there folks, i've got a very important question that I would love to throw at you guys - I seem unable to find anything that explains in fully elsewhere.

    All I want to know is when I turn on 'Block UDP traffic' 'Enable Firewall' and 'Enable Stealth Mode' .. just HOW invisible do I become?

    I work at, er, work, and i'm one of the only Mac computers connected to their network internally. It's on a University network. Problem is, well, sometimes I just can't help stumble on some NSFW sites, and accidentally download pictures that maybe I should not in a work senario.

    Is there any way an IT technician in control of the network would pick me up? My job, literally could depend on it ;)

    cheers guys
  2. AppleMatt macrumors 68000


    Mar 17, 2003
    Secure your computer all you like, the network admin can see every byte coming in and out of it.

    Your only hope would be to receive encrypted transmissions - which isn't going to happen.

    If your job depends on it I'd stop. Right now.

  3. djdarlek thread starter macrumors regular

    Oct 10, 2003
    Yes Apple Matt, thankyou for your honest advice. At one point years ago I was downloading a LOT of porn at work using P-2-P. I got caught using DC++ after I generously thought I was helping someone out with an upload at some ridiculous speed. You know, wow he's going to get this 700 meg in like 3 minutes, why not leave it. I got caught! I stopped immediately, and haven't really done anything like that since. Now it's mainly alt news sites that have those damn 'adultfriendfinder' ads slapped all around the edges. The sites themselves aren't pornagraphic, but yes, I guess I should give them up too. But there's only so much BBC.com you can read! lol

    Cheers for the advice

  4. savar macrumors 68000


    Jun 6, 2003
    District of Columbia
    HAHA! I've never heard anybody admit to doing that, but that's pretty damn funny. I would never risk it at work though because I like my job and they take that kind of thing very seriously.

    Back on topic, though. Stealth mode just means that your computer isn't easily seen from another computer on the network. Usually malicious people looking to abuse your computer will do a "scan" where they send messages to large blocks of sequential IP addresses. For many services/operating systems, the default is to send some sort of acknowledgement response back. Setting stealth mode simply means your mac doesn't respond to any of these generic requests. Of course, if you turn on any services on the firewall, then your mac will be visible through those services.

    If you really want to get porn at work, you could encrypt everything you transfer. Just make sure every site you go to is secure (https), and that none of them have suspicious names. There must be a site like that somewhere, seems like a potentially large market.
  5. jsw Moderator emeritus


    Mar 16, 2004
    Andover, MA
    The network admins will still know where you went, even if they don't know what you saw.

    Just ask yourself if it's better to be bored or unemployed.
  6. ElectricSheep macrumors 6502


    Feb 18, 2004
    Wilmington, DE
    I would say that your only hope is to use an encrypted link to a proxy machine outside the scope of your work's network, and have a legitimate reason for accessing said proxy from your job.

    This all assumes, of course, that nobody has installed software to let them snoop around the machine you use.
  7. DavidLeblond macrumors 68020


    Jan 6, 2004
    Raleigh, NC
  8. amholl macrumors 6502

    Dec 21, 2004
  9. dogbone macrumors 68020


    Sep 16, 2005
    S33.687308617200465 E150.31341791152954
    I've been meaning to ask for a while and this is as good a place as any, is there any reason *not* to enable stealth mode?
  10. pablofmichel macrumors newbie

    Apr 24, 2006
    i was about to ask myself the same question, as i had never noticed such options in the preference pane of "Sharing". Well, anyway now I found it. Go to Apple>System Preferences>Sharing>Firewall>Advanced... And there it is! BTW can someone tell me what is recommended to have check and what not? Right now I just check Stealth mode because I don't really know what UDP means... and as for the logging, I never read that kind of stuff anyway.
  11. m-dogg macrumors 65816


    Mar 15, 2004
    At work? C'mon man...just wait until you get home...
  12. quigleybc macrumors 68030


    Jun 17, 2005
    Beautiful Vancouver British Columbia, Canada

    Good question...anyone got an answer ??
  13. Queso macrumors G4

    Mar 4, 2006
    The stealth mode in OSX drops just incoming ICMP packets, meaning that your Mac will no longer reply to ping requests. Any network service that you legitimately have enabled will still respond, but only if the incoming requests target the enabled service's TCP/UDP port.

  14. jhu macrumors 6502a


    Apr 4, 2004
    you could always ssh to another computer and forward the connection to access your porn.

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