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===Critical iptables Elements===
This may seem like another task to perform, but it is an essential task! You need to "become one" with basic iptables and focus on these important elements on this section, since you will be troubleshooting MANY connection issues with MANY VMs for labs and assignments! You need to become comfortable when using iptables to not only set policy, but troubleshoot and fix mistakes when you set your firewall policies!
''... the more you practice and get comfortable with iptables, the quicker you will be able to isolate and fix connection issues...''
'''We don't expect you to become firewall experts, but there are some basics you need to become familiar for this and future labs:'''