McKenna is impressing in his first experience as a manager with the League One club.
"It was a great experience," McKenna told the Daily Mail of United. "I was really proud at such a young age to be involved in some big victories against some of the best teams and best managers in the world.
"There were big losses and disappointing days along the way but if you work at that level, every result is a fantastic win or an absolute crisis. The scrutiny is off the scale because it's the most successful club in British football and the most widely supported worldwide."
Ole Gunnar Solskjaer and Michael Carrick have been to Ipswich games to support McKenna, who has a strong former United presence running through his backroom team. Assistant manager Martyn Pert, first-team coach Lee Grant and head of recruitment Sam Williams are among those who followed him from Old Trafford to Portman Road.
"I have my own goals, my own beliefs, my own values and I stick to them," said McKenna. "I have good contacts but I like to work with my own judgment, think things through and try to be authentic and true, and see where it takes me. Your journey in football is unique. You can't plot it out. The best thing to do is to try and improve yourself, focus on the areas where you can get better, try to help the club you are at to develop and improve, play well and win games."