Prevention of DDOS attack -2

prevent ddos attack, simulate ddos attack, need an environment setup, what service is going to provide ? , it might be website or application request, and no of request, server will crash, server setup needed, we need to attack the server with multiple clients, once ddos attack coding are ready, we need to proceed the attack in the server, server will get request and service will get crash what counter measures to avoid ddos attack ? how im going to prevent the attack, ddos attack comes, handle the request , node management PROJECT IS TO CREATE A SERVER CLIENT ENVIRONMENT WHERE SERVER PROVIDES ACCESS TO SIMPLE WEBSERVICE OR ANYTHING IT CAN BE , THEN USING ONE OF THE CLIENT CONNECTED TO THAT NETWORK INVOKE THE DDOS ATTACK AND SHUTDOWN THE SERVICE PROVIDED BY SERVER, THEN USING ANY TRAFFIC MONITORING SYSTEM STOP THE DDOS ATTACK AND RECOVER THER SERVER AND RESUME THE SERVICE. I need a draft first , the draft should be about the PREPARATION OF THE ENVIRONMENT , IDEA HOW THIS ENVIRONMENT SHOULD IMPLY , WHAT IS REALLY NEEDED TO TEST THE ENVIRONMENT AND SEE HOW COMPUTERS CAN REACT TO THIS ATTACKS, DESCRIBING THE CONFIGURATION OF THE TEST ENVIRONMENT OF THE TESTING, INCLUDING THE COMPUTER NETWORK DEVICES AND POTENTIAL SOFTWARE WHICH SHOULD BE USED, SOME ELEMENTS SHOULD BE ADDED WITH SPECIAL SOFTWARE OR DEVICE, PROBABLY VIRTUAL DEVICE FROM FIVE NETWORKS WHICH HELPS TO WORK WITH THE EFFECTS, PROTECT AND FIGHT AGAINST THEM AND CAN FIND OR DETECT THAT THE ATTCK IS GOING ON . WHAT ARE THE MERITS , PROCEDURE TAKEN TO PROTECT THE SERVER INTERNAL ENVIRONMENT