"John Hauser is an absolute gem of an instructor! Taking EDU-330 Troubleshooting with Palo Alto Firewalls was a breeze, thanks to his expertise and engaging teaching style. He breaks down complex concepts effortlessly, making them easy to grasp. His patience and willingness to answer questions ensure every student feels supported. With John's guidance, I not only mastered troubleshooting techniques but also gained a deeper understanding of Palo Alto firewalls. I highly recommend his class to anyone looking to excel in network security. Five stars all the way!"