PAT (overloading) maximum number of translations per inside global address
PAT (also referred to as NAToverloading) divides the available ports per global IP address into three ranges:
- 0-511
- 512-1023
- 1024-65535
PAT assigns a unique source port for each UDP or TCP session.
For more information on how inside global port values are assigned, take a look at NAT how port numbers are chosen when using PAT