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→Part 1: Replacing firewalld with iptables
# Stop the ''firewalld'' service and start the ''iptables'' service in a single, chained command: <code> systemctl stop firewalld; systemctl start iptables</code>
# Check the status of the firewalld service. It should tell you it's stopped.
# Check the status of the iptables service. It should tell you it's '''active (running)'''.
# View your current iptables firewall rules: <code>iptables -L -vn --line-numbers</code>
# Refer to ''Figure 1''. If your rules at this stage look different, stop and contact your professor for help.
