topic Re: BTC Mining, port 3333 is closed in Everything else

BTC Mining, port 3333 is closed

earldn6533 — Wed, 05 Nov 2025 11:02:23 GMT

Hey,

I have recently moved to Plusnet and im having issues with ' Network Status Abnormal'. I have reached out to Bitmain and they have said its my port 3333 is closed. Does this sound correct? and how do i open it?

Re: BTC Mining, port 3333 is closed

Townman — Wed, 05 Nov 2025 11:15:47 GMT

What research on the issue have you done?

A google search produced this amongst numerous other discussions ... BItcoind/P2Pool What am I doing wrong? - Bitcoin Stack Exchange

Re: BTC Mining, port 3333 is closed

Dan_the_Van — Wed, 05 Nov 2025 11:40:55 GMT

The Hubs inbuilt firewall allows all outbound traffic, unsolicited in bound traffic is blocked by default.

So, if port 3333 is an outbound connection then the routers firewall will allow the traffic.

However it the connection is an unsolicited inbound connection or the firewall is blocking the connection then you will need to set up a Port Forward rule for TCP to the device which is used for BTC Mining.

To setup a Port Forward rule on the Hub 2 navigate

>Home >Advanced settings >Firewall >Port Forwarding

The rule would look something like

Hope this helps

EDIT: you can check if a port is open on your Hub by using this site https://www.canyouseeme.org/

Re: BTC Mining, port 3333 is closed

earldn6533 — Wed, 05 Nov 2025 11:51:09 GMT

Does it sound right that? I’m clueless with this stuff but port 3333 is closed as someone has checked it for me. I’ve taken the miner to my parents house this morning and I’m getting the same issue there and they are on Virgin (like I was before).

Re: BTC Mining, port 3333 is closed

Baldrick1 — Wed, 05 Nov 2025 11:52:14 GMT

Moderator's note:
Thread moved from Broadband to Everything Else

Re: BTC Mining, port 3333 is closed

earldn6533 — Wed, 05 Nov 2025 14:58:50 GMT

What device do i select?

Re: BTC Mining, port 3333 is closed

Dan_the_Van — Wed, 05 Nov 2025 15:36:37 GMT

The device that is running the BTC mining app

Re: BTC Mining, port 3333 is closed

earldn6533 — Wed, 05 Nov 2025 15:40:21 GMT

Ive put the ip adress in but still no luck. I can ping the site too. I really dont think the is a connection issues ;/

Re: BTC Mining, port 3333 is closed

Dan_the_Van — Wed, 05 Nov 2025 16:18:35 GMT

To clarify,

For the port forward rule you add the computer/device name or IP Address which is on your home network not the remote site you are connecting to.

Edit: I think you need to refer back to the apps support, maybe adding a port forward rule is not required.

I can't say for sure I do not use BTC

Re: BTC Mining, port 3333 is closed

earldn6533 — Wed, 05 Nov 2025 16:24:34 GMT

It was an issue with the Pooling Site, somehow my Miners worker name had been removed. Anyway after 7 days im back up and running. Really do love how people have helped me on here

Re: BTC Mining, port 3333 is closed

Dan_the_Van — Wed, 05 Nov 2025 16:29:39 GMT

Pleased you're back on-line.

If you created a port forward rule then I would suggest removing it if it is not required.