New iMac user firewall on or off

Discussion in 'iMac' started by robtonet, Nov 30, 2014.

  1. robtonet macrumors newbie

    Oct 31, 2014
    hooked to a cable modem......on or off-?--default is off apparently--i think if should be on if on unsecured wi fi- but not sure--i assume the cable has its own.--but can it be a hinderence to have it on in addition to that? thank you
  2. SandboxGeneral Moderator emeritus


    Sep 8, 2010
    Orbiting a G-type Main Sequence Star
    If your Mac is connected directly to a cable modem and it's not also a router/firewall, then you should turn the software firewall on in OS X.

    If you have a wifi router between your Mac and the modem, then you won't need the OS X firewall.
  3. maflynn Moderator


    Staff Member

    May 3, 2009
    That's what I do, and because I have a MBP, when its on a public wifi, I turn the firewall back on. At home, its off

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