Why was my firewall off?

Discussion in 'macOS' started by yettimillan, Nov 25, 2009.

  1. yettimillan macrumors regular

    May 28, 2009
    Hi ive just been looking in system preferences and saw my firewall was off. I immediately turned it on. I don't know why it was off, i have never turned it off before, im really worried now, how can i check for bad things on my mac?
  2. angelwatt Moderator emeritus


    Aug 16, 2005
    It's off by default. So if you never turned it on it would of course be off. Nothing to worry about. Most people are reasonably protected by their router anyways.
  3. jon08 macrumors 68000

    Nov 14, 2008
    Speaking of Firewall, do you guys also get frequent Console logs with "Stealth Mode Connection Attempt to UDP...."? It's kind of annoying and makes me anxious, but from what I read somewhere it's just my router trying to establish connection or something?
  4. miles01110 macrumors Core


    Jul 24, 2006
    The Ivory Tower (I'm not coming down)

    4th post down.
  5. yettimillan thread starter macrumors regular

    May 28, 2009
    Does this mean people can hack my computer then or is it still secure.

    Should I have the firewall on or off?
  6. maflynn Moderator


    Staff Member

    May 3, 2009
    Short answer no
    Long answer yes.

    Generally speaking OSX is secure anyways and if you have various services turned off, such as SSH, remote login, FTP, etc. There's little most people can do to hack into your machine. Plus most routers have a firewall as well. With that said, if you feel you need that extra layer of protection, go ahead and turn it on. If someone wants to get in, they still probably can but it will take a lot of work.

    fwiw, I have issues with the firewall turned on, connections issues with vpn and remote connectivity to my work's servers. So I keep it off and have had it off for years because I have said services off and my router is sufficient to protect me and so far, it hasn't failed me
  7. Infrared macrumors 68000


    Mar 28, 2007
    If you have more details, we could answer that. You could
    quote a line from the log (and exclude your own IP address).
  8. Jethryn Freyman macrumors 68020

    Jethryn Freyman

    Aug 9, 2007
    The firewall in System Prefs in 100% medicore, don't expect it to be any help defending you. Google for "ipfw leopard" for help configuring the proper firewall.
  9. jon08 macrumors 68000

    Nov 14, 2008
    I'm sorry for replying kind of late, but here are two of the IP addresses I have noticed trying to establish connection to TCP:

    For the latter IP address I just checked Console and there were like 40-50 consecutive msgs saying "Firewall [54] Stealth Mode connection attempt to TCP [my IP] from..."

    Is this anything I should be concerned about then?

    P.S.: to miles01110: I read what you posted in that link, so I'm hoping it really isn't an actual attempt of hacking...

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