Is there really any benefit of this over just using HTTP?
What is the threat model in which an attacker could MitM your internal network?
replies(5):
What is the threat model in which an attacker could MitM your internal network?
Police raid on your home/company. Malware on a router. Malicious actor in the server room. Possibilities are endless.
SSL added and removed here ;-)
(this is a reference, look it up if you don't recognize it)
If you have physical access, TLS isn't much protection against eavesdropping. At that point they can just compromise your hardware instead.