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Author Topic: Port opens automatically..?  (Read 4734 times)

keraynos

  • Level 1 Member
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  • Posts: 4
Port opens automatically..?
« on: November 03, 2007, 06:09:20 AM »
Hello all,
I've just installed my 655.
My (maybe naive) question is this:
I use mtorrent and I noticed thet even though I haven't set port forwarding, whenever the app starts the specified port is automatically opened(mtorrent works fine and a port scanner verified this).

How is this possible without setting such a rule to the router..?

Has sth to do with UPNP?
If yes, should I better disable it and manually set a forwarding rule(in terms of security).

Thank you all in advance.
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ddwinell

  • Guest
Re: Port opens automatically..?
« Reply #1 on: November 03, 2007, 10:05:07 AM »
UPNP, will allow apps to automatically open ports they require. And by default it is Enabled.

You can configure your router how ever you wish. UPNP will not open ports for inbound connections, only apps that are being run from the local side of your network, so if you have a clean system then UPNP should be just fine.

You can either use virtual server,

http://support.dlink.com/faq/view.asp?prod_id=2805&question=DIR-450%20/%20DIR-615%20/%20%20DIR-625%20/%20DIR-635%20/%20DIR-655

Which will allow you to open one port, or port forwarding which will allow a range or multiple ports that are no sequential to be opened with the same rule.

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