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I'm afraid...
I wasn't very clear on the use of this app. The point is that if you have your firewall enabled and you want optimal network performance in your network apps, you'll have to open the ports for these apps in the firewall. And these ports will remain open for incoming traffic even when the apps aren't loaded. Ichat, Skype, IRC, Limewire, whatever you use...
This app isn't because I'm worried about outgoing traffic, like someone already said, just use Little Snitch. That's not the point. On the other hand, I have no idea how much an app like this in the end really does increase your machine's security. But I personally feel a lot safer knowing that I don't have any idle open ports lying around if I'm not actively asking for information on those ports.
I'm afraid...
Well, as already mentioned above, if the app/service/deamon that would respond to the Incoming port is not running, then no service/port is open on that port - unless it's registred with launchd and then auto-open when traffic comes in on that port (as it has told launchd to respond to that port)
I'm afraid...
Well, I do see denied traffic in the ipfw logs for traffic from ports for apps which are currently running. This shows that unless you open up the port manually in the ipfw preferences, there will be denied traffic on these ports.
And leaving the ports open in the ipfw configuration leaves them always open. I've also seen this from denied traffic to these ports logged in the ipfw logs when these apps aren't running. YMMV.
A better solution...
A port is only "open" if an application is listening on the port, and the port is not blocked by a firewall. If the port is not open, you are not vulnerable on that port (unless your network stack itself is vulnerable, in which case you're very, very screwed and a software firewall probably won't save you). |
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