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Author Topic: UPnP port 4433  (Read 2724 times)

basl

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UPnP port 4433
« on: August 22, 2012, 02:26:20 AM »
Hey guys,

So I used my default torrent port 60000 as the listening port for incoming connections.
Everything looks fine. I also enabled upnp.

But when I look in my router(dd-wrt) I see an extra port, port 4433.
The two ports open when I open qB on my pc. These are 60000 tcp, 60000 udp and 4433 tcp (check the included logs from qB and dd-wrt(router))

I don't see this port anywhere mentioned in the configuration or even the conf file.
The port isn't mentioned anywhere on the forums and a google search doesn't answer the question either.

Can anyone tell me why this port is being opened on my router, without my consent?

Thx in advance.

Code: [Select]
Forwards
Description Enabled From (WAN) To (LAN) IP Address Protocol
qBittorrent v3.0.0 at ***.***.***.***:60000 Yes 60000 60000 ***.***.***.*** TCP
qBittorrent v3.0.0 at ***.***.***.***:4433 Yes 4433 4433 ***.***.***.*** TCP
qBittorrent v3.0.0 at ***.***.***.***:60000 Yes 60000 60000 ***.***.***.*** UDP

Code: [Select]
22/08/2012 02:02:29 - Peer ID: -qB3000-
22/08/2012 02:02:30 - UPnP/NAT-PMP: Port mapping successful, message: successfully mapped port using UPnP. external port: 60000
22/08/2012 02:02:30 - UPnP/NAT-PMP: Port mapping successful, message: successfully mapped port using UPnP. external port: 4433
22/08/2012 02:02:30 - UPnP/NAT-PMP: Port mapping successful, message: successfully mapped port using UPnP. external port: 60000
22/08/2012 02:02:29 - Options were saved successfully.
22/08/2012 02:02:29 - Embedded Tracker [OFF]
22/08/2012 02:02:29 - Encryption support [ON]
22/08/2012 02:02:29 - Local Peer Discovery support [ON]
22/08/2012 02:02:29 - PeX support [ON]
22/08/2012 02:02:29 - DHT support [ON], port: UDP/60000
22/08/2012 02:02:29 - HTTP user agent is qBittorrent v3.0.0
22/08/2012 02:02:29 - UPnP / NAT-PMP support [ON]
22/08/2012 02:02:29 - qBittorrent is bound to port: TCP/60000

Tomaso

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Re: UPnP port 4433
« Reply #1 on: August 22, 2012, 07:14:14 AM »
Could it be the "Check for software updates" function that uses this port?

Dayman

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Re: UPnP port 4433
« Reply #2 on: August 22, 2012, 08:56:05 AM »
This port is used for ssl torrents.
From libtorrent documentation:
Quote
ssl_listen sets the listen port for SSL connections. If this is set to 0, no SSL listen port is opened. Otherwise a socket is opened on this port. This setting is only taken into account when opening the regular listen port, and won't re-open the listen socket simply by changing this setting.

It defaults to port 4433.

There is no option to control this port in qBittorrent unfortunately.
« Last Edit: August 22, 2012, 09:33:56 AM by Dayman »
Building x86_64 stuff on Windows due to Gentoo syndrome.

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basl

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Re: UPnP port 4433
« Reply #3 on: August 22, 2012, 04:21:38 PM »
Thx for your guys' responses.

So from what I understand, is that this listening port is used for enabling SSL torrents. (in combination with openssl, which I don't see anywhere mentioned in qB).
A feature from the libtorrent platform, that is enabled in qB as a default setting.

Maybe it's an idea to propose a new feature in qB which enables you to turn this off.
If I should believe the sentence below from the manual, it shouldnt be hard for the devs.
Code: [Select]
To not listen on an SSL socket at all, set ssl_listen to 0.http://www.rasterbar.com/products/libtorrent/manual.html

Thx.

Dayman

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Re: UPnP port 4433
« Reply #4 on: August 22, 2012, 04:51:13 PM »
http://www.rasterbar.com/libtorrent_blog/2012/01/bittorrent-over-ssl/
Interesting. I've never seen any SSL-enabled torrents with embedded certs.
Building x86_64 stuff on Windows due to Gentoo syndrome.

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basl

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Re: UPnP port 4433
« Reply #5 on: August 23, 2012, 01:29:22 AM »
Guess I will switch to port 4433 for my torrenting.
Better one, then two ports open.

Torrenting over ssl seems to be the way to go in the future.
Trackerless bittorrenting with encrypted traffic.  8)

May be an idea for Demonoid v2.  ;D

christophe.dumez

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Re: UPnP port 4433
« Reply #6 on: January 16, 2013, 06:12:43 PM »
qBittorrent v3.0.7 will no longer listen on port 4433. I have disabled it for now since we do not technically support SSL torrents at this point.
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