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.