install firewalld ubuntu 20.04
sudo apt update
sudo apt install firewalld
sudo systemctl enable firewalld
sudo systemctl start firewall
sudo firewall-cmd --list-allinstall firewalld ubuntu 20.04
sudo apt update
sudo apt install firewalld
sudo systemctl enable firewalld
sudo systemctl start firewall
sudo firewall-cmd --list-allCopyright © 2021 Codeinu
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