Configuring multiple hosts behind NAT

Configuring multiple hosts behind NAT

Hi There,
 
I'm trying to configure multiple hosts behind a single NAT'ed public IP to report into an external collector. I am however only seeing one of the three devices reporting in. I'm picking that NetFlow Analyzer may be detecting the same interface name, or something to that effect, as the three devices are behing a single NAT'ed public IP.
 
How is the configuration of devices behind a NAT'ed IP recommended for NetFlow?
 
Any help would be appreciated
 
Cheers
Frazer

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