There are only 4 commands to do static NAT on Cisco Router. Here is an example
access-list 1 permit 192.168.1.0 0.0.0.255
ip nat inside source list 1 interface <wan> overload
ip nat outside ==> on WAN port
ip nat inside ==> on LAN port
access-list 1 permit 192.168.1.0 0.0.0.255
ip nat inside source list 1 interface <wan> overload
ip nat outside ==> on WAN port
ip nat inside ==> on LAN port