NAT port limits
Your Hyper-v virtual network can use the following ports:
o the System Ports, also known as the Well Known Ports, from 0-1023 (assigned by IANA)
o the User Ports, also known as the Registered Ports, from 1024-49151 (assigned by IANA)
The following ports can NOT be assigned:
o the Dynamic Ports, also known as the Private or Ephemeral Ports, from 49152-65535 (never assigned)
For more information about this subsect please go to RFC6335.