Run uTorrent, and then open the Kaspersky interface on your PC. Click on the 'Settings' tab on the Kaspersky program, and then click 'Protection.' Click 'Threats and Exclusions' in the left pane. Click the 'Settings.' Button in the Exclusions section of the Kaspersky window. Now I need to punch the proper holes into the firewall to allow the p2p traffic. My understanding is that I will need to allow both tcp and udp through on port 51413 (that is the default port) to the NAS. If you hit no or don’t use Windows Firewall, you still need to let uTorrent through. If using Windows Firewall: Open uTorrent and select Preferences. Navigate to Connections and check the box next to ‘Add Windows Firewall exception’. Open your firewall software and allow uTorrent traffic to pass freely through. If you connect to the VPN, you have 2 IPs. One assigned from your ISP, and then one assigned from your VPN. The difference is that the VPN transfers data through a tunnel that you established using your ISP's IP. – TJJ Feb 23 '17 at 7:31. Let's take an example: Imagine you connect to the internet using your phone line.
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hi this has my head wrecked and cant get my head around it 1st some assumptions
1.
if a computer out in the big bad web tries to send my computer data my routers NAT-PAT firewall will ingore it and wont let it through or route it to my computer if however i sent them a request they can respond but i cant send them a request unless they have a port forwarded through there firewall.
2.
peer 2 peer works by users sending each other data such as in a torrent and everyone shares what they have without passing through a central server with a port forwarded to it.
question.
so when i join a torrent how does my computer start send or recieve data to and from other peers when none of us have ports forwarded?
1 Answer
so when i join a torrent how does my computer start send or recieve data to and from other peers when none of us have ports forwarded?
The answer is, for torrents you can't. To be able to connect in a p2p network one of the two sides must have a port opened in the firewall to connect. Most torrent software will use UPnP to automatically open a port in the firewall and set up port forwarding for the torrent software.
When you are connecting to someone who has a open port it is just a normal connection.
When you have the open port and you want to connect to people who do not have a port open on their firewall your torrent software lists your machine on the tracker with your IP and port you have open and then you must wait for other users to connect to you before you can start communicating with them.
Some p2p networks (torrents do not use this however) will use a 3rd party peer (another machine in the p2p network who does have his ports open) to pass through the connection, this is often known as a 'Supernode'. Another option to get around firewalls is you use a 3rd party to exchange 'metadata' then you perform NAT Hole Punching to form a direct link with your partner.
Scott ChamberlainScott ChamberlainNot the answer you're looking for? Browse other questions tagged firewall or ask your own question.
From my understanding this is how trackers work:
- I want a file. My BitTorrent client tells the trackers I want that file
- Other peers who also want that file do the same thing.
- The tracker connects me to those peers and/or connects those peers to me and we all download the file together.
However, if I am using a VPN how do they connect to me? I tested the VPN I am using with https://ipleak.net/ and http://ipmagnet.services.cbcdn.com and it always shows my VPN's IP. How do the peers connect to me if they don't know my real IP?
EDIT: Downvoter, care to explain? I'm open to constructive criticism.
![How to download torrent through firewall windows 7 How to download torrent through firewall windows 7](https://www.rootusers.com/wp-content/uploads/2016/03/windows-firewall-inbound-rules.png)
5 Answers
The peers don't need to know your real IP, you are giving them a way to contact you by simply contacting them yourself.
![Torrent download Torrent download](https://cdn2.macworld.co.uk/cmsdata/features/3678817/how-to-download-torrents-on-ipad-torrent2.png)
Even if the tracker shares an unreachable IP (your VPN) and other peers fail to connect, directly at least, you make yourself reachable by contacting those peers yourself.
You may be blocking inbound requests from unknown hosts, but by contacting a peer and requesting data from it yourself you are initiating a two way data connection that they can use to not only send data, but to request it as well.
The VPN is probably doing exactly what you expect, blocking unknown host connections, but once you contact someone through it you have effectively established a two way pipe between you and a peer. Whenever your software gets an updated list of peers and contacts new peers then you will get new data flowing outwards as well as inwards.
Most home router firewalls (with UPNP disabled) will automatically block incoming connections as well which creates this same problem of peers not being able to connect to you. Once you start connecting to them (per the list supplied by your tracker) then you are effectively poking very specific holes in your firewall for communication to happen to (and from) very specific places. The VPN is essentially a remote firewall from this perspective.
Mokubai♦MokubaiThe VPN is forwarding traffic to and from your computer - it is literally inbetween your system and the Internet.
So, assuming it is set up properly, all your outgoing Internet traffic is directed to the VPN. The VPN then forwards the traffic where it needs to go.
Routers do this all the time, an Internet-access-providing VPN is really just a router where you have an encrypted connection to it.
The VPN knows your ISP-provided IP so it knows where to send the traffic when it receives it.
LawrenceCLawrenceCThe same question is generally applicable to a setup without VPN.
How To Block Torrent Download In Firewall
Assuming you have a [INTERCLOUDZ]->[ISP MODEM/WIFI]->[YOU]
setup, the mechanism by which you can torrent is the same as it is via VPN.
Basically, whatever your local IP (probably 192.168.0.x-like), the connection itself will be done using public IP addresses - on a very basic level, this is a simple matter of other hosts recording which IP they see your client connecting from.
A VPN just adds a hop: [INTERCLOUDZ]->[VPN]->[ISP MODEM/WIFI]->[YOU]
.
So where without a VPN, your ISP modem's public IP is what others will use, with a VPN, the VPN IP is what is used.
Whether or not your provided allows inbound traffic is another matter, but keep in mind torrenting generally uses UDP, where the notion of stateful is a little more complicated than for TCP.
If you try to connect to me, what will generally happen is that the VPN host's firewall will record the flow (e.g. (src_ip,src_port),(dest_ip,dest_port)). If 'return' traffic (an actual response, or an attempt by the other side to connect to you) is seen within a certain timeframe, then it is considered to be part of that flow, and the two ends can communicate.
Let's assume you're using windows and have a BT or vuze client over it along ivacy or express or any other vpn.What the vpn is doing, is simply assigning you a new ip with which you're transmitting the data. That ip is serving as a tunnel that's offering protection from the outsiders and encrypting the data.
Tools like iplocation will always reveal your vpn provider's ip and not the ip assigned by your isp unless there's an ip leakage (that's a known issue with windows btw).Your peers will never know your real ip, they'll only see the one the vpn your has currently assigned you.
Since your vpn is acting as an intermediary, they'll be able to send and receive the data through that protected ip or tunnel - though in some instances, you'll have to forward your ports to enable this data processing.
you can refer to jilin's answer for more on it.
Journeyman Geek♦The short answer is 'Assuming the VPN is correctly set up, they can't'.
If the IP address assigned to you by your ISP is being leaked, the traffic is not going across the VPN, which could happen for one of 3 reasons - The VPN does not have a default gateway set, the VPN is down and the system is falling back to the systems regular IP or the computer has been set up to allow some routes to bypass the VPN (which is unlikely but possible).
Of-course, there is more to downloading torrents then just downloading them - if your system has been compromised (eg you ran untrusted software) this could be finding your route table, and even conceivably your ISP assigned IP address and sending it back outside the Bittorrent program/protocol.
From a conceptual point of view a VPN provides an IP address to your computer, and this IP address takes precedence over your ISP provided IP address (except for to the VPN endpoint). Thus when Bittorrent clients/trackers are communicating with the VPN it does so exactly as it would if it were your routers provided IP.
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