./categories/os
Ubuntu 방화벽 ufw
Ubuntu ufw
sudo ufw enable
sudo ufw disable
sudo ufw allow 1234/tcp
sudo ufw deny 1234/tcp
sudo ufw delete allow 1234/tcp
sudo ufw delete deny 1234/tcp
sudo ufw deny from <IP>
sudo ufw status
관련 링크: https://mrgamza.tistory.com/792
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