Antminer S21 XP closes ports after a while

[jxoul]

Hello,

I have a Antminer S21 XP , a Raspberry Pi  and a laptop in the same network.

When I power on the miner, it's Web UI is accessible from both laptop and Raspberry.

I turn the miner on, and I monitor the ports that is exposes to the Raspberry.

The SSH service on port 22/tcp,
the web administration UI on 80/tcp,
the miner’s API port 4028/tcp,
and an internal metrics port 6060/tcp

all start out accessible when the unit boots, but then close or stop responding after about 60 minutes of continuous operation (even as mining continues normally).

Web UI stays accessible from my laptop though.

Why is this happening? How can I fix it?

Does anyone faces same problem?

[philipma1957]

don't bother with the rasp pi and your problem is solved.

Time and time again I simply do not understand why people try to get

a rasp pi to do real work 24/7/365

[BitMaxz]

It looks like an automated safety mechanism of the miner from a brute-force attack.
Since the Antminer program is based on Linux, it has built-in firewall rules to avoid brute force attacks.

There might be a limit request sent to the miner on the latest unit, like the S21.

What software do you use to monitor the unit? Try to increase or decrease the monitoring timeout. Awesomeminer has a 5-second timeout by default; they recommend setting it to 300 seconds when these ports are disconnecting.