Should I be concerned about these attempted connections? "Failed to decode packet 'serverbound/minecraft:hello'"

  • Thread starter Thread starter /u/ImpressedStreetlight
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/u/ImpressedStreetlight

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My server is regularly getting these messages in the log:

[17:57:41 INFO]: /204.76.203.35:29167 lost connection: Internal Exception: io.netty.handler.codec.DecoderException: Failed to decode packet 'serverbound/minecraft:hello'

each time with a different port but always the same ip.

I banned that ip with both /ban-ip in the minecraft server and with ufw deny from in the command shell, which I saw recommended on some posts. Yet these messages are still appearing in the log frequently. Is there a security risk? I have just basic knowledge about hosting servers so I appreciate any input.

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