Configuring a topology with firewall and IPSec

[kerimaksoy]

Hi. I am trying to do an exercise which topology is:

 

and necessarry config steps are: 

I am new at computer networks so, I am not sure if I even did the topology correct on the Cisco Packet Tracer. I just did addressing and routing but couldnt do the DMZ yet

I wanna ask

if my design on Packet Tracer is correct or not? And at least first Step 3 are necessary for me to do, if anyone can help me I will be appreciated

My topology;

[Flavio Miranda]

Hi

 In Packet Tracer you have firewall. You dont need two cables between router and switch, you should use trunk.

[kerimaksoy]

Thanks I will change it but can you help me about configuring the dmz and firewall I dont really know which commands I should use to configure