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        <title>ufw</title>
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Installation


sudo apt install ufw
sudo apt install gufw          #universe, optionale grafische Oberfläche


Konfiguration

 Zuerst Regeln für Remotezugriffsports erstellen, dann ufw aktivieren! 


sudo ufw allow 80/tcp
sudo ufw allow 443/tcp
sudo ufw allow 22/tcp
sudo ufw allow 2300:2400/udp

sudo ufw allow from 10.1.1.0/24                              # any
sudo ufw allow from 10.1.2.0/24 to any port 8080 proto tcp   # allow port 8080/tcp für 10.1.2.0
sudo ufw delete allow from 10.1.1.0…</description>
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