Did you know there's bots that check random IPs for Minecraft servers?

[Soukuw]

I just learned about this today because a player named "mcscans" joined and left my server. I have never posted about my server online ever. https://mcscans.fi/

So yeah just be aware not only does this allow random people to join your server but it also lets people know port 25565 is open.

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[Conan]

thats why i always play with a whitelist