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→Part 1: Replacing firewalld with iptables: Fixed incorrect reference to Figure 5.
# Check the status of the iptables service. It should tell you it's '''active''': <code>systemctl status -l iptables</code>
# View your current iptables firewall rules: <code>iptables -L -vn --line-numbers</code>
# Refer to ''Figure 15''. If your rules at this stage look different, stop and contact your professor for help. (Values in the '''pkts''' and '''bytes''' column may vary.)
# Set iptables to start with the system: <code>systemctl enable iptables</code>
# Remove ''firewalld'' completely, including all unused files: <code>yum autoremove firewalld</code> ('''Note:''' If you don't remove firewalld and both firewalls are set to start with the system, firewalld will always start instead of iptables. This can lead to much frustration. Make sure you remove it!)
