sudo yum install firewalld sudo systemctl start firewalld sudo systemctl stop firewalld sudo firewall-cmd --reload sudo firewall-cmd --state sudo firewall-cmd --query-port=80/tcp sudo firewall-cmd --permanent --list-ports sudo firewall-cmd --permanent --add-port=8080/tcp sudo firewall-cmd --permanent --add-port=8083-8085/tcp sudo firewall-cmd --permanent --remove-port=8083-8085/tcp
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