scarince,
It's there alright. Try this link...
587792 - Simple Stratix 5700 NAT Setup
Access Level: Everyone
Also have a look here, even though I also linked this in one of the threads you linked to earlier...
554727 - Stratix 5700: NAT(Network Address Translation) Configuration
Access Level: TechConnect
...and here...
596742 - Connect to a Stratix 5700 NAT switch on the Public Side
Access Level: TechConnect
...and while we're at it...
619491 - How to configure the Stratix 5700 with NAT to handle multiple identical machines.
Access Level: Everyone
...and here for good measure...
543731 - Number of Supported NAT Entries on the Stratix 5700 with NAT
Access Level: Everyone
Regards,
George