Automatically opening the firewall?

Subject: Automatically opening the firewall?
From: Chaz McGarvey <email@hidden>
Date: Sun, 25 Jul 2004 12:34:58 -0600

Hello:

Is there a way to detect if a port is being blocked by the firewall OS X uses? If so, is there a way to programmatically open a port? What I think would be nice is that when my server was run, it could detect if its port was being blocked and inform the user about this and offer to open it for them. In fact, now that I think about it, it would kind of be nice if the system did that automatically whenever listen() (or equivalent) was called and then closed the port when the server stopped listening. Would this be too big of a security risk?

Chaz McGarvey
http://www.brokenzipper.com
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