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Configure the Firewall

Owned by Marty Goodrich
Last updated: Apr 12, 2023
1 min read

  1. Enable and start firewalld

    systemctl enable firewalld
systemctl start firewalld

  2. Allow SSH (22)

     firewall-cmd --zone=public --add-service=ssh --permanent

  3. Allow http (80)

     firewall-cmd --zone=public --add-service=http --permanent

  4. Allow https (443)

    firewall-cmd --zone=public --add-service=https --permanent

  5. Allow smtp (25)

    firewall-cmd --zone=public --add-service=smtp --permanent

  6. Optionally allow MySQL

    firewall-cmd --zone=public --add-port=3306/tcp --permanent

  7. Reload the firewall configuration

    firewall-cmd --reload

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