You have to configure ip nat inside on inside (LAN) interface and ip nat outside on WAN interface.
Then you canconfigure portforward:
ip nat insdie source static tcp 10.0.0.10 1122 150.0.0.1 2233
tcp - protocol, which you want to forward TCP/UDP
10.0.0.10 - IP address of your private device
1122 - port on your private device which you want access
150.0.0.1 - public IP which will represent your private device in internet
2233 - public port which will be forwarded to defined port on private device
And i learnt PAT too