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How to open a port?

9880 Views 4 Replies Latest reply: Oct 3, 2009 9:04 AM by j.v. RSS
Paul Rothrock Level 1 Level 1 (110 points)
Currently Being Moderated
Oct 2, 2009 9:14 PM
On Leopard opening a port was easy. Go into the sharing preferences and add the port or range of ports that you want open. With Snow Leopard Apple changed it to this weird "block application access" method that my old Unix-y brain is having a hard time understanding.

How do I tell the firewall that I just want to open a port? Is this now only accomplished via the shell?
MacBook Pro 2.4Ghz, Mac OS X (10.6.1)
  • j.v. Level 5 Level 5 (4,150 points)
    Currently Being Moderated
    Oct 2, 2009 9:27 PM (in response to Paul Rothrock)
    Yes, or by using a GUI front end program like WaterRoof.
    2008 Mac Pro (10.5.8), 2001 Quicksilver (10.5.8), 2008 MacBook aluminum (10.6.1)
  • Barney-15E Level 7 Level 7 (33,285 points)
    Currently Being Moderated
    Oct 3, 2009 6:36 AM (in response to Paul Rothrock)
    Apple tried to make it simple for people who have no need/desire to open a port. They just want to use iChat (or whatever). If you have a program that needs to use a port, it requests it, and the Application Firewall asks you if you want to allow it. Then, the port is opened as needed.

    If you want to create an open port, not tied to an application, then the previous poster gave you one method.
    1.8 SP G5/iMac G4 FP/MBP 2.33/PB G3 Pismo, Mac OS X (10.6.1), XLR8 G4 Upgrade for Pismo
  • j.v. Level 5 Level 5 (4,150 points)
    Currently Being Moderated
    Oct 3, 2009 9:04 AM (in response to Barney-15E)
    I wish I could figure out how, in Sys Prefs > Security > Firewall, one could add an entry tied to a particular application for things like smtpd, rather than have to use ipfw to open port 25 for unestablished inbound traffic.
    2008 Mac Pro (10.5.8), 2001 Quicksilver (10.5.8), 2008 MacBook aluminum (10.6.1)

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