Yes it is possible, but you have a few problems.
1) Red5 is terribly under-documented and buggy.
2) rtmpe/rtmps
3) performance/scalability
4) 1 through 3 are things you can overcome, but not without getting to know media distribution and all of it’s associated issues very intimately. By the time you’re done, you will be one of like 800 people out there who really understand it. You’ll have to go down a long path of solving unexpected problems.