I am so happy to see you again, Mr. Lee Going of Life Coding, while searching for Linux. You are by far the best among all the education I have received in my life. I respect you. I learned step by step from Life Coding and converted http://sidemirror.shop to paid through AWS EC2 Freetier, so I had to search for https://sidemirror.shop. When I tried to access my server, I couldn't access it, so I contacted AWS dozens of times, but I got a parrot-like answer telling me to contact the Technical Team, and I asked for help in several places on the Internet, but I only heard echoes and couldn't find anyone who could solve only the parts I really needed. I got tired of wandering around and gave up for 2-3 years, and only recently, with the help of AWS partner Samyang Technic, I was able to access the server, but it was stopped while AWS's ELB listener SSL certificate for https was issued. I felt the limitations of my vulnerability Linux control and came to see you. It's long-winded. I would like to express my sincere gratitude to Mr. Egoing, who has consistently and sincerely shown good intentions as developers do in various fields. For your information, I am a person who is in the middle of the 6th grade and has the ID of “Gungho” and “Hagisiseupji” in Saengko. He is an educator who teaches in an easy way and seems to understand, but the implied and compressed content requires repeated reflection. Jeong Byeong-ho Bae Sang