Ports 80 and 433

[chrisdab]

Are ports 80 and 433 used in utorrent for file transfers like they are in BitTorrent? I am worried about security vulnerabilities with showing my IP on those ports.

chris

[spork985]

You can change the port that uTorrent uses, Options --> Connection Tab --> Listening Port

[chrisdab]

That is listening port though. Is that passive or does that send packets?

edit:

Oh I had already changed that port to one that I opend up in my router. So I am guessing utorrent doesnt use http correct?

[spork985]

I believe that is correct, but am not 100% sure.

[Ultima]

Eh HTTP is used to communicate with trackers.

[spork985]

I wasn't aware that trackers used HTTP, I always see high ports, mostly 6969.

[Ultima]

HTTP is not a port; it's a protocol (like how BitTorrent isn't a port; it's a protocol) ;\

But your idea was correct -- µTorrent shouldn't be using port 80 on your computer unless set to listen on that port.

[Firon]

Port 80 and 443 refer to the REMOTE port. You will see that port as the remote port if someone is using it as their listening port (as most websites do). The port used on YOUR computer will typically be in the 1024-5000 range, as that is the ephemeral port range.

Firewalls typically check for the remote port.

While it's not normal to see the port being used for BT connections, it is possible. Many trackers actually do run on port 80.

However, you shouldn't see established -incoming- connections to port 80 or 443 unless you explicitly set it to listen on that port.

The listening port is technically passive in the sense that it waits for connections, but it will actively send back on that same port to an established incoming connection.

[chrisdab]

Hi, thanks for responding. Does that mean Peerguardian IP blockers will have to be set to block http? I am not sure if I got that part correctly. Thanks.

[Switeck]

You block HTTP and chances are µTorrent wouldn't run.

[Ultima]

Quick answer: don't worry about those ports.