When a DDoS attack occurs through changing the IP pattern as follows: Blocks ‘15.177.0.0/16’ bandwidth/range access more than 15 times in 60 seconds. (Application 1) Blocks ‘15.177.0.0/16’ bandwidth/range access more than 3 times in 30 seconds. (Application 2) Blocks ‘15.177.0.0/16’ filter ‘GET / HTTP/1.1’ string. (Application 3) Rule that blocks…