Zatvorte všetky porty v systéme linux

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2
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otvorte port firewall v systéme linux

Debian: sudo ufw allow PORT. CentOS: sudo firewall-cmd --zone=public --permanent --add-port=PORT/tcp sudo firewall-cmd --reload
1
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Debian zabiť otvorený port

fuser -k 3000/tcp 	//will kill that process.

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