Can't open specific ports on my Mac

Discussion in 'Mac OS X Server, Xserve, and Networking' started by Demigod Mac, Dec 15, 2010.

  1. macrumors 6502a

    Apr 25, 2008
    Trying to open ports to allow hosting Killing Floor games, but no matter what I do, it doesn't want to open them.

    The following ports are used by the game:
    * Linksys E1000 router w/ latest firmware installed
    * Computer is assigned a static IP address (wired connection)
    * Port Forwarding and Port Range forwarding have been configured
    * Have tried DMZ to my Mac, no difference
    * Mac OS X Firewall is disabled
    * Router firewall is disabled
    * Firewall On with the app on the allow list isn't making a difference

    This web-based tool and Network Utility keep showing the required ports as "closed" even though I have set up port forwarding to my Mac's IP and there are no firewalls in place.

    Here's the thing: if I enable something like Web Sharing (port 80) in Sharing, it opens and closes the port just fine, and those two utilities show the port's status properly.

    But no matter what I do, firewall on or off, I can't get ports 7707-7717 and the others to become "open" on my Mac.
  2. thread starter macrumors 6502a

    Apr 25, 2008
    Follow up:

    I think I narrowed this down to the router.

    Plugging the modem into the computer directly- it works! Friends can join my game without an issue.

    Puzzling, to say the least.
  3. macrumors 68030

    Les Kern

    Apr 26, 2002
    try enabling the firewall and opening the ports manually? Just something to try.

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